Thank you for choosing Lume Pad (2020)

The original Lume Pad came out in 2020, and was a non-tracked "4V" device (4x4 views for a total of 16 views) glasses-free 3D Android tablet. After running the Leia Appstore for Lume Pad (2020) for four years, we're stopping support in July 2024, two years after we stopped selling the device. For your convenience, we will be providing download links to the final versions of Leia apps on Lume Pad (2020), and links to a few other popular apps, with no warranty or support, either express or implied. You will be using these apps at your own risk.

All links to Lume Pad app APKs are available at the bottom of this page.

What is Lume Pad?

Lume Pad is the world’s first Lightfield tablet. A crisp, comfortable 10.8-inch Lightfield display offering a no-compromise experience for the Android apps you know and love as well as a suite of apps that you can see in stereoscopic 3D with the naked eye without ANY specialized eyewear required.

If you’re a creator that wants to see your content in a new light, Lume Pad provides a beautiful medium to highlight your work.

Whether you’re designing buildings, developing games, creating 3D models in new ways, or even if you’re constructing a new take on medical visualization software: the Lume Pad is the tool for you. Pictures, videos, and 3D models. All elevated to the next level with Lightfield.

It all starts here with the Lume Pad and its powerful Leia app suite.

This guide will help you understand everything you can do with your Lume Pad.

Anatomy of the Lume Pad

The Lume Pad is a high-quality Android tablet with a chassis made of brushed aluminum. On the back of the device you'll find the Lume Pad and LitByLeia logos, the high-quality 3D camera, and the antenna window.

On the front of the device you'll find the front-facing camera, the ToF sensor, and of course, the DLB Lightfield display.

On the right side of the device you'll find the volume rocker and the lock button, and on the top of the device you'll find the USB-C charging port.

It all starts with the screen

At Leia, we’ve developed a single optical layer sculpted by nanotechnology that sits just underneath the LCD display to create the Lightfield effect, powered by what we call Diffractive Lightfield Backlighting (DLB).

With 2D content, the Lume Pad’s 10.8-inch screen projects out a bright 2560X1600 picture. When used for traditional Android apps, that 16:10 screen looks bright, sharp and, well, like a normal high-end Android tablet.

But when the DLB is activated, lights pass through it to create a dynamic Lightfield 3D effect. The light projects out four views simultaneously in 16 directions -- this is Lume Pad's Lightfield view mode. Unlike other 3D solutions, Lume Pad is brighter, thinner, can instantly switch between full-quality 2D and Lightfield 3D, and can be rotated to support every orientation while in 3D. Lume Pad is LitByLeia.

Our goal is to deliver our vision of how Lightfield can change the way we see art, engage in commerce, and affect the world.

Software for Lume Pad

Clay is a creative 3D sculpting experience for the Lume Pad.

Dungeon Demo is a short single-level action game that takes place in a fantasy dungeon.

Floppy Fish is a simple voxel game where you play as a fish and tap to make the fish go up and avoid obstacles.

Tower Defense is a sample app that showed how to use the Leia SDK to build an app for the Lume Pad.

WRLD Demo is a simple demo that shows cartoon maps of different parts of the world in 3D.

Citra3D is a port of the popular Nintendo 3DS emulator for the Lume Pad by Jake Downs.

VVB is a Nintendo Virtual Boy emulator for the Lume Pad originally by Simon Gellis and made for Lume Pad by Simon Gellis and Jake Downs.

MPV 3D is a 3D media streamer app that connects to a server app on your PC that supports additional formats not supported by LeiaPlayer.

Editing Tools

Depth Slider

• The Depth slider controls the disparity value of your image. As you move the slider up, you will perceive more depth

• Disparity is the difference in image location of the same 3D point when projected under perspective to two different camera views

• Perception of depth arises from the “disparity” of a given 3D point in your right and left retinal images

Focus Slider

• The Focus slider controls the convergence value of your image.

• As you move the slider up, more objects in your image will appear to be popping out of the front of the screen

• As you move the slider down, more objects in your image will appear to be moving backward behind the screen

• The convergence value is the point at which the left and right eye images align, which sets the location of convergence at the screen plane

• Objects in front of this point will appear to be in front of the screen and those behind will appear to be behind the screen

Bokeh Slider

• The bokeh slider controls the digital blur applied to background pixels that are located behind the convergence plane

• If you move the convergence slider to the very top, there are no pixels considered as behind the convergence plane, and thus aren’t part of the background

• Thus you won’t see any digital blur applied to those pixels, even if you move the Bokeh slider to the very top

Color

• These are primarily straightforward chroma editors that you will see in any mobile photo editing app

Brightness

• This will increase the brightness of all shadows and highlights in your image

• Your photo will look brighter overall as you move the slider up

Saturation

• This will increase the photo’s color intensity

• The colors in your photo will look more intense as you move the slider up

Contrast

• Contrast is the range of difference between different tones in a photo

• For black and white photos, contrast describes the difference between the darkest and lightest tones

• For color photos, contrast applies to how sharply colors stand out from one another

• As you move the slider up, bright colors will appear brighter

• As you move the slider down, dark colors will appear darker

Hue

• Adjusting the Hue slider to see shifts in the color values in your images

• You can radically alter your photos colors

• Smaller, more incremental adjustments can effectively reduce unwanted color casts and correct the photos white balance

Color Pop

• Color Pop will remove color from pixels considered as part of the background

• This makes the colors of objects in the foreground really standout

• This is the only feature in the Color section that makes use of the disparity map

Resize

• Simple tools for resizing and rotating your image.

• Note that if you crop an image down to a smaller size, its disparity and convergence values will increase, which will increase the depth sensation

Relighting

• This is where the artistic flavor gets added

• Tap any of the relighting presets, and you will have different lighting configurations added to your image.

• These lighting placements use the depth map to get placed into different parts of the image.

Filters:

• Apply styles to your images by selecting the preset filters.

• As with relighting, you can apply multiple presets to each image to create your own custom styles.

• Combine these filters with a bunch of relighting presets to make each image a unique work of art

LeiaPlayer is a simple yet powerful app that lets you view, organize, and edit your 3D Lightfield media.

Media

When you launch LeiaPlayer, you’ll find yourself in the Media gallery. The app launches directly to Media so you can easily find the images or videos you've engaged with most recently.

Media shows you all the images and videos found in your Pictures, Movies, and Downloads folders as well as any file you navigate to and open in LeiaPlayer's File Browser. You can easily remove any file from your Media tab by selecting it inside the Media tab and choosing "Remove Selection From Media". You can also easily add any file on your device to the Media tab by finding it in LeiaPlayer's File Browser and selecting "Add Selection to Media".

If you're opening LeiaPlayer for the first time, you’ll notice some preloaded media to give you inspiration on what 3D Lightfield content can look like. Note: Media will automatically add photos and videos found in the top level of your Pictures, Movies, and Downloads folders, but will not automatically add files in nested folders found inside those listed folders.

Navigation Menu

Menu Button

Tap the Menu Button (a.k.a. Hamburger Menu) in the top left to access the Navigation Menu Drawer. From here, you can jump between different file galleries in LeiaPlayer.

Moving down the drawer menu below Media, you'll see Camera Roll, File Browser, Lume Link, and Settings.

Media

This is the default browsing experience in LeiaPlayer. The Media tab aggregates media on your device in one easy to use place. By default, all the image and video files in your Pictures, Movies, and Downloads folders will appear here. However, other files that you've opened in the LeiaPlayer File Browser will appear in Media automatically too, as well as media you've added using "Add Selection to Media".

Camera Roll

File Browser

This section shows you the entire file system of your device. The LeiaPlayer File Browser follows the standard file browsing paradigm from Android. The File Browser shows the folders on your device, and these folders contain subfolders within them. When you tap the “Pictures” folder you will see the “Screenshots” subfolder contained within it, alongside any media that's already in the Pictures folder.

We want to preserve this folder structure so that when you move files on or off of Lume Pad from a computer or another app, you can easily understand where they're located.

Lume Link

Lume Link is a feature of the LeiaLink app that allows you to send images from your mobile device to your Lume Pad and have it waiting for you in LeiaPlayer already converted into Lightfield 3D.

Settings

The Settings tab in LeiaPlayer gives you the ability to turn features on and off and customize your LeiaPlayer experience.

• General: This section provides several options for how you'd like to view media in LeiaPlayer. It also gives you options on how you'd like LeiaPlayer to handle certain features that may make modifications to your files.

• Video Playback: Options for default video playback behavior.

• About: Licenses and legal info.

• LeiaPlayer Beta: Sign up for future Beta versions of LeiaPlayer.

LeiaPlayer Tips

Add Media to Lume Pad

There are a variety of ways to add media to your Lume Pad, including downloading files from the internet, or getting a 3D Lightfield photo or video from another Lume Pad user. To add media from a computer to Lume Pad to experience in LeiaPlayer, you can use Android File Transfer on MacOS or simply plug your Lume Pad into a PC to move files from your computer onto Lume Pad. Then, you can find them in LeiaPlayer and view them.

Automatic 3D Conversion

All 2D or 3D content can be viewed in 3D in LeiaPlayer! For 3D content it's self-explanatory, but for 2D images and videos it's a little different. Still, it's as easy as tapping the Leia Lightfield button.

• 2D Images: Open a 2D image so it's full screen in LeiaPlayer. Tap the Leia logo in the bottom left hand corner on the View Switcher, and a new LIF format version of your image that's in 3D. You will have two files now: the original 2D image and the new 3D LIF image.

• 2D Videos: Open a 2D video so it's full screen in LeiaPlayer. Tap the Leia logo in the bottom left hand corner on the View Switcher, and after a few seconds of buffering, you will see your video playing back in 3D! Just follow these steps again whenever you want to view your 2D video file in 3D.

Ellipsis Button

The Ellipsis Button is the three vertical dots you usually see in the top right corner of the app. The Ellipsis Menu changes depending on the context of where you are in the app.

The Ellipsis Button opens up View Options if you're in a standard Gallery View. These View Options may be available in other modes too, like in Bulk Selection Mode. These are the options available within the View Options menu:

• Lightfield/2D Sorting: Show only Lightfield media files, only 2D media files, or Both.

• Media Type Sorting: Show only Images, only Video, or Both.

• Sort By Options: Sort by Date Created, Date Modified, Filename, File Size, or Resolution

The Ellipsis Button opens up More Options if you're in the File Browser View. These are the options available within More Options when in the standard File Browser View:

• New Folder: Creates a new Folder within the Folder that you're currently in.

• Select: This option will switch you into Bulk Selection Mode so you can easily select mutliple files to move or delete.

The Ellipsis Button opens into More Options in Bulk Selection Mode. Here are the options available within More Options when in Bulk Selection Mode:

• Add Selection to Media: Adds the selected file to the Media tab.

• Rename: You can use this option to change a file's filename (Only when 1 file is selected)

• Move: This feature will move the file(s) from one folder to another (more info below)

• Select None: Deselects all selected items and exits Bulk Selection Mode

• Invert Selection: Deselects all currently selected items and selects all currently unselected items within the folder that you're in.

• Select All: This option will select every item in the folder that you're in

Move Files

Moving files from one location to another is easy. Just follow these instructions:

1. Long press an image thumbnail to enter Bulk Selection Mode.

2. Select the files that you would like to move.

3. Tap the Ellipsis Button (3 vertical dots) in top right corner.

4. Tap the Move Button in the More Options Menu.

5. In the Move Menu, navigate to the destination folder you want to move the file(s) to.

6. Tap the Move Here Button in bottom right corner to confirm the move.

7. The files will now be located in the destination folder you selected.

Viewing 3D images

If you have 3D files from other sources like SBS or Quad Lightfield images or video, LeiaPlayer will try to detect them automatically. However, sometimes, LeiaPlayer may not automatically detect them as 3D. To manually communicate to LeiaPlayer that the files are 3D, you will need to use the 3D Tagging feature.

Here's how to do this in LeiaPlayer:

1. Open up the 3D image that's being displayed in 2D

2. Tap Ellipsis Button (3 vertical dots) icon in top right corner

3. Tap Add 3D Tag

4. Follow the instructions and answer questions about the file

5. The file will now be viewable correctly in 3D

Theater Mode

Overview

When you open an image or video in LeiaPlayer, it will open in Theater Mode. This is the best place to view 3D Lightfield media.

View Switcher (Lightfield/ST/2D)

When viewing media, you will notice an option in the bottom left corner to change the view mode.

Lightfield: This icon looks like the Leia logo. View the compatible image or video as a 3D Lightfield with 4 unique views. Lightfield View Mode has the following benefits: a wide viewing angle, comfortable for multiple viewers, objects feel more real and have a "look-around" (parralax) effect.

ST: This icon is named for Stereoscopic 3D View Mode. The icon is only shown when viewing compatible files. View the compatible image or video in traditional stereo 3D with 2 unique views. Stereo 3D has some benefits, including: support for more depth for a single viewer, and no synthesized views. The downsides for Stereo 3D View Mode include a smaller viewing angle, much less comfortable for multiple viewers, no look-around / parallax effect, and increased chance of cross-talk/ghosting. This is the preffered viewing method for content captured on legacy 3D systems.

2D: View the image or video in standard 2D with a single view. 2D is highest resolution with maximum brightness, but of course has no depth or look-around effect/parralax.

Apple Depth Map 3D Conversion

Some Apple devices allow you to capture depth maps when shooting images in Portrait Mode and with some other apps. The quality of the depth map depends on the device, the sensors available, and the environment and distance from the subject when the image was taken.

• Shoot Portrait Mode Images on your iOS device where the Portrait Mode Indicator (e.g. Natural Light icon) is yellow

• Move images with Apple Depth Maps and move them to your Lume Pad (using LeiaLink, email, or other method)

• Open it in LeiaPlayer

• Tap the Leia Lightfield View Button to convert Apple Depth Map images to a 3D Lightfield LIF

Currently supported iPhone Models

• iPhone 13 Series

• iPhone 12 Series

• iPhone SE (2020 and 2022)

• iPhone 11 Series

• iPhone XS Max

• iPhone XR

• iPhone 8 Plus

• iPhone 7 Plus

Sharing images to other LumePad devices

In order to share Leia Image Format (LIF) files to another Lume Pad device and retain the 4V depth metadata, you must be cognizant of the transfer method you use. Many messaging apps and social networks will strip the 3D Lightfield metadata and send only a 2D image to the other user.

If you'd like to send the LIF file directly to another device here are some methods that work:

• Email

• Supported Messaging Platforms

  • Discord

  • WeChat

• ZIP: If you compress or ZIP images before sending them, metadata will be retained in transit

Sharing Lightfield images To 2D social networks and devices

• If you want to share your Lightfield images to 2D devices, tap the share button in the gallery screen.

• This will allow you to export images as Lightfield Animation in MP4 and GIF format, which are Lightfield-synthesized animations that show the depth of your images by interpolating smoothly between the image's views.

• This is the best way to share your Lightfield images on traditional social media platforms.

Viewing Options for Lightfield Video

Loop Video

• To loop your video continuously, tap the ellipsis button in the top right corner

• Then tap “Loop Video On”

Depth Slider

• You will see the Depth Slider on the right-hand side of the screen whenever viewing video content in Lightfield view mode

• Move the Depth Slider up and down to increase or decrease the disparity value, which will increase or decrease the sensation of depth

Lightfield Image Editor

What are the benefits of editing Lightfield Images in LeiaPlayer?

• Improve the visual quality of your images

• Increase the depth effect of your images

• Add artistic flair to your images

To edit images in LeiaPlayer, open an image and tap the pencil and pad icon in the bottom center of the screen. Only some 3D Lightfield images can be edited, including LIF and 3D SBS images.

The LeiaPlayer editor relies on the depth map to estimate the depth at each pixel in the photo, which can be used to identify portions of the image that are far away and belong to the background. Quad Lightfield images don't contain the Lightfield metadata needed to edit them.

Images are saved in the Leia Image Format, and will retain the same number of views as it originally contained.

Take Photos

• When you launch the app, you will open into Photo Capture Mode in 3D

• Tap the white capture button to take a photo

• Photos captured by the Lume Pad's Rear Stereo Camera saved in 3D will be in the LIF format (a type of JPEG), which you can view in Leia apps in 3D or anywhere else in 2D

Camera Switch

• Tap the camera switch button to switch between the front and rear camera

Preview Image

• Tap the image preview icon in the bottom right corner to view your image in LeiaPlayer

Take Videos

• Tap Videos tab to change to video capture mode

• Tap the white and red capture button to take a video

• Videos can be captured in 3D or 2D by changing the selection in the Settings in the bottom lefthand corner

LeiaCam Settings

Grid View

• Tap the Grid Off button to turn on the rule of thirds grid

• Rule of thirds is a common compositional technique that divies your frame into an equal, 3x3 grid with two horizontal and vertical lines that intersect at four points

• Place your subject on the left-third or right-third of the frame to create a pleasing composition

Flash

• By default, the camera flash will be turned off

• Tap the flash off icon to view 3 options: flash on, flash off and auto-flash

• Tap the lighting icon to turn flash on

• Tap the lighting icon with an A to turn auto-flash on

Front and Rear Camera Differences

Rear 3D Camera

Photos and videos from the Rear 3D Camera can be captured in 3D or 2D.

Rear Camera Photo Specs

• 2x 13MP Sensors

• f/1.8

• Wide

• Close-loop

• AF

• Depth map captured in real time

• Saved as LIF photo

Rear Camera Video Specs

• 2x 1080p@30fps

• Saved as an SBS video

Front Camera

Photos and videos taken with the front camera can only be captured in 2D.

Front Camera Photo Specs

• 8MP

• f/2.0

• Wide angle

Front Camera Video Specs

• 1080p@30fps

Photo File Format

JPEG: All 3D images captured in LeiaCam are saved in the Leia Image Format with the file extension .jpeg at the end of the filename. All 2D images taken are standard JPEG photos.

What is Leia Image Format? Leia Image Format (a.k.a. LIF) is a JPEG picture that is encoded with extra information making the image viewable as a Lightfield image. Leia devices will automatically identify LIF files as a 3D image and display them in Lightfield view mode. Leia Image Format is fully backwards compatible as a 2D image on all non-Leia devices. If you send or upload a LIF through a platform that compresses images, depth information may be lost.

Video File Format

MP4: All videos captured in LeiaCam are saved in the MP4 format with the file extension .mp4 at the end of the filename.

SBS: If the video is taken with settings that enable 3D, the MP4 will be encoded in SBS (Side by Side) format, which is a 3D filetype where one video per eye is encoded side by side, the left eye on the left, and the right eye on the right. These files will automatically be detected on Leia devices as 3D videos. They may be backwards compatible with other 3D devices, but may require extra filename tagging or manual option selection to show the file in 3D. On 2D devices, you will be able to play back the SBS file, however you will see both the left and right eye video on the screen at the same time.

You can turn any 3D image file in LeiaPlayer into a Lightfield Animation. This is a an animation that can be shared anywhere that can give others an understanding of the depth in your 3D image.

To create and share a Lightfield Animation, all you have to do is open the 3D Lightfield image that you want to turn into a Lightfield Animation, tap the Share button, and then select either "Video Animation" or "GIF Animation".

Video Animations will be in the MP4 file format and GIF Animations will obviously be in the GIF file format.

The Lume Link tab on the side of LeiaPlayer allows you to connect your smartphone to your Lume Pad. Then, you can easily send pictures to your Lume Pad from your mobile device and they'll appear in 3D Lightfield in LeiaPlayer.

It's easy!

Instructions on Lume Pad

• Go to the Lume Link tab in LeiaPlayer

• Sign in using LeiaLogin

• You'll see a pin number on-screen

Instructions on Mobile Device

• Now grab your mobile device.

• On your mobile device, go to your device's app store and download LeiaLink

• Open LeiaLink and follow the instructions on the screen

• Type your LeiaLogin account's email address into the LeiaLink app

• Type the pin number on your Lume Pad into the LeiaLink app

• Your Lume Pad and mobile device are now linked!

Now you can go to the image gallery on your smartphone, select images, and share them to the LeiaLink app. They will appear in the Lume Link tab in LeiaPlayer on your Lume Pad, except they'll be in beautiful Lightfield 3D!

LeiaLogin uses a Single sign-on (SSO) authentication method that enables you to enter your login credentials once to give you access to all Leia apps and services across the same device.

Your LeiaLogin account provides access to a unified user account experience across Leia’s hardware and software.

Using LeiaLogin is simple.

On Lume Pad, LeiaLogin supports creating accounts with either your email address or your Google Account. If you choose to sign in with your email address, you will need to create a password, along with providing your first and last name, and birth date. If you're using Google to sign in, some data from your Google account like your name may be synced with your LeiaLogin account. Information provided on your account is never used in apps (e.g. LeiaPix) without your express approval.

You can manage your LeiaLogin account through the web. There will be a link to open the web portal to manage your LeiaLogin account in the Settings of any app that uses LeiaLogin.

LeiaPix is the premier social media app for Lightfield images. It houses the largest collection of Lightfield images in the world – and it's the best way to share, discuss, and discover new Lightfield content. Users post amazing, inspirational and fun images every day.

Log In

You are two checkboxes away from joining the LeiaPix community. Agree to the LeiaPix Privacy Policy, Terms of Use, and Community Guidelines, then confirm that you're 16 years of age or older. After that, use your LeiaLogin account to sign in to LeiaPix.

LeiaPix Home Feed

Whenever you start LeiaPix anew, you'll find yourself in the Home Feed.

The Home Feed can be accessed at any time whenever the Navigation Bar is visible, which is the row of icons you see at the bottom of the screen. If you're on another page and would like to access the Home Feed, press the LeiaPix Home Button in the middle the Navigation Bar (it's the button that is the LeiaPix Icon).

The Home Feed is an endless curated feed of LeiaPix content from people you follow, what's currently trending, and images the algorithm thinks you'll like based on what you've liked in the past. The Home Feed consists of the Title Bar at the top of the screen and a scrollable feed of image thumbnails of LeiaPix Posts.

If you start scrolling down, the Title Bar with the LeiaPix Logo will automatically dissapear. If you scroll up again, it will reappear. You can instantly jump back to the top of the Home Feed by tapping the LeiaPix Logo in the Title Bar. When you're at the top of the Home Feed, you can pull down to refresh the Home Feed.

While you're in the Home Feed, you can tap on any image thumbnail to enter Theater Mode.

Theater Mode

Theater Mode is the primary method of interacting with images in LeiaPix. Almost anywhere in the app, if you see an image thumbnail, you can tap it to enter Theater Mode. This includes the Home Feed which we already mentioned, but also when in a Discover Category page, in your Notifications page, or in your Profile page, all of which we'll discuss later.

In Theater Mode, you can see the user who posted the image, the time the image was posted, and read the image's caption. There are also multiple ways to interact with the image, which are listed here:

• Full Screen the image by tapping on the image itself to make the borders with buttons and information appear and dissapear

• Like the image to let the person who posted it know you liked it by tapping the Heart Button

• Comment on the image to start or add to a conversation by tapping on the Word Bubble Button

• Bookmark the image for later viewing in the Bookmarks section of your Profile page by tapping on the Bookmark Button

• Tap the Ellipsis Button for more options

  • Share a web link to the LeiaPix Post

    • If the user clicks on the link on a device with LeiaPix installed, it will open the LeiaPix app directly to the Post you shared

    • If the user clicks on the link on a device without LeiaPix installed, it will open the Post in LeiaPix.com as a Lightfield Animation, which is an animated 2D version of the Post

  • Report the Post if you believe it goes against the LeiaPix Community Guidelines

  • Block user will make it so that you no longer see any content from the blocked user anymore and vice versa (this can be reversed in Settings)

  • Export the image

    • Still Image exports the image in Leia Image Format, which is a 3D Lightfield image that looks 2D on any device that isn't LitByLeia

    • Video Animation exports the image as a Lightfield Animation in MP4 format

    • GIF Animation exports the image as a Lightfield Animation in GIF format

    • A variety of destinations are supported depending on the format you choose, including Facebook, Instagram, Twitter, Slack, WhatsApp, and more

• Visit the Profile of the user who posted the image by tapping on their name or profile picture in the top left of the Theater Mode screen when the info border is visible.

• You can press the Back Arrow in the bottom left corner of the Theater Mode info border to return to the page you were in before entering Theater Mode.

If you're in a view within LeiaPix that has other images in it, you can swipe up and down while in Theater Mode to see other images.

Uploading Images

Now that you're comfortable using LeiaPix, why don't you try uploading an image yourself?

What to Post

There are two major ways to Post images to LeiaPix

1. You can Post images already on your device's storage, whether they have been:

   • Taken with the LeiaCam app previously

   • Downloaded from an app or website

   • Transferred from an external drive or computer

2. Taken with LeiaCam from the Upload page inside the LeiaPix

How to Upload

To start the process, you simply press the Upload button on the far left of the LeiaPix Navigation Bar. The Upload button looks like a square with a plus [+] sign inside of it. The Navigation Bar is accessible from most screens, including Home, Discover, Notifications, and Profile. If you don't see the Upload button, press the back button until you reach a screen where the Navigation Bar appears.

When you tap the Upload button, you'll be taken to the Browse Images Page. Once you've entered the Browse Images Page for the first time, you'll be prompted to provide the app access to your files so it can upload your images to LeiaPix. Press "Allow Access" whenever prompted.

Whenever you tap the Upload Button in the Navigation Bar, you will enter the Browse Images Page showing your device's Camera folder by default. This will allow you to choose any 3D Lightfield image that was previously taken with the LeiaCam app.

To change the folder you're browsing, tap on the folder name at the top of the screen with the [v] symbol to the right of it. This will let you choose any folder on the device that has 3D Lightfield images in it. The number below the folder name tells you how many 3D Lightfield images are in it.

If you'd like to take a new picture to post, simply tap the Take Photo button on the Browse Images Page. This will open LeiaCam from within LeiaPix, and you will be able to take a 3D Lightfield image. The functions in LeiaCam that aren't supported by LeiaPix, such as video, will not work when using LeiaCam from within LeiaPix.

Once you've taken or selected an image to post to LeiaPix, tap the Next button on the top right of the Browse Images Page. This will take you to the full screen Image Preview page, which will let you confirm this is the image you'd like to post before posting. Press the Next button in the top right to continue the upload process, or press the X button in the top left to go back to the Upload Page.

When you tap Next on the Image Preview page, it'll take you to the Caption Page. Here, you can write a caption for the image you're going to upload.

Captions can include up to 240 characters of the following:

• Text: Captions can have text describing the image, saying what it is, when it was taken, and other details about it.

• Emojis: Emojis can be used for additional communication options within a caption.

• User Mentions: You can mention or "tag" another user in your image by using the "@" symbol and beginning to type their name. Once you see their name in the menu that appears, tap on it to add them to the caption. The text of their name will turn purple if done successfully. You can use User Mentions to tag people who are in the image uploaded, give photo credit to the person who took the photo, or simply to send another user a notification to check the image out because you think it's something they might like.

• Hashtags: Help group images that are similar to make them easier to discover and find. You can use the "#" symbol to create a hashtag. After using the "#" symbol, you continue to type a series of letters without spaces or punctuation to create a hashtag (e.g. #dog). Oftentimes, people will use hashtags to identify what is in the subject of the image, where the image was taken, when the image was taken, the brand of the products in the images, and other things along those lines. For example, if someone took a picture of the cheeseburger they had for lunch while on vacation in Seattle with their friends, the hashtags they use might include: #food #burger #cheeseburger #lunch #Seattle #vacation #friends

  • NOTE: Hashtags are not case sensitive, but will retain the case of the letters you choose before posting. e.g. Posts that have #LOSangeles and #losANGELES in their caption will both come up when you search for #losangeles, but if your caption has #LosAngeles it will show up as #LosAngeles whenever people view your Post's caption in Theater Mode.

Finally, once you're done writing your caption, you can press the Post Button in the top right to post your image to LeiaPix!

When you press the Post Button, your image will begin to upload and you will be taken to your Profile Page.

Profile Page

Profile Pages are the primary place where a user's LeiaPix posts live.

There are two kinds of Profile Pages: User Profiles of other users, and Your Profile, which can be accessed by pressing the Profile Button on the far right of the LeiaPix Navigation Bar.

User Profile

Users usually go on the User Profile Page of another user to see all the posts from that user.

When you're on a User Profile Page of another user, you can see the following:

• Their name

• Their Profile Picture

• Their Cover Photo (if they've set one)

• Their number of Followers

• The number of users Following them

• Follow/Unfollow

  • If you're not Following the user, you'll see a Follow Button on their Profile

  • If you are Following a user, you'll see an Unfollow Button on their Profile

  • When you Follow a user, it ensures you see new posts from them in your Home Feed

• Their Bio

• Their LeiaPix Posts

• Ellipsis Button

  • Share Profile lets you share a web link to their profile

    • If opened on a device with LeiaPix installed, it will automatically open their User Profile Page in the LeiaPix app

    • If opened on a device without LeiaPix installed, it will open a 2D preview of their User Profile information in a web browser

  • Report allows you to report an account that you believe violates the LeiaPix Community Guidelines to the LeiaPix Team

  • Block user allows you to prevent this user to interact with you in any way, see your posts, see your comments, and vice versa (this can be reversed in Settings)

Your Profile

Your Profile has all of the same features as a regular User Profile, except for the Ellipsis Button.

In addition, Your Profile has the following features:

• Your LeiaPix Posts will be available on Your Profile, and when you tap the thumbnail they will go into Theater Mode. When in Theater Mode, you can:

  • Swipe through all of your Posts

  • Like your own Posts

  • Comment on your own Posts

  • Bookmark your own Posts

  • Ellipsis Button

    • Share a link to your Post

    • Edit your Post's caption, including User Mentions and Hashtags

    • Delete your post from LeiaPix forever

    • Export your post as a Still Image, Video Animation, or GIF Animation

• Edit is a button which takes you to a page that allows you to edit your Profile.

  • Change your First Name

  • Change your Last Name

  • Change your Bio

  • Edit your Profile Picture

  • Edit your Cover Photo

  • Delete your Cover Photo

• Bookmarks is where all the other posts that you've bookmarked live. You can come here to view and enjoy all the LeiaPix Posts you've bookmarked.

• LeiaPix Prints is a button that looks like a printer in the top right of your profile which lets you order physical printed 3D images of your LeiaPix Posts.

  • Choose the images you would like to Print

  • Choose the size and quantity of each

  • Enter the Address where you would like prints to be delivered (only the United States is currently supported)

  • Enter your billing information

  • Order Prints, and they'll be delivered to you

• Settings is a button that looks like a gear that gives you access to a lot of information and options that can alter your LeiaPix experience

  • Account

    • Tells you what LeiaPix Account you're signed in with

    • Share Profile allows you to share a link to your own LeiaPix Profile

    • Blocked Users is a list of every user you've blocked, and an option to Unblock them

    • Sign Out allows you to sign out of the LeiaPix Account you're signed in with

  • LeiaPix Prints

    • Orders provide information about prior and current LeiaPix Prints Orders

    • Address Book allows you to view, add, and edit addresses in your address book to make it easier to deliver LeiaPix Prints to different places

  • Support

    • What's New tells you about the newest features in the current version of the app

    • Get Help asks some questions and sends your information to the LeiaPix Team so they can more sufficiently help you

    • Report a Bug asks some questions and sends your information to the LeiaPix Team so they can try to eliminate the bug you noticed

    • Other Feedback asks you some questions and sends your information to the LeiaPix Team so they can review your feedback and use it to improve the app

  • Legal

    • Terms of Use explains the current requirements users accept when using LeiaPix

    • Privacy Policy explains how Leia responsibly handles your data

    • Community Guidelines explains the guidelines all LeiaPix users agree to abide by when using the app and interacting with each other

    • Open Source Licenses lists the open source software that is used in LeiaPix

  • Sensitive Content

    • Show All Sensitive Content is a switch that is off by default which hides Sensitive Content (content that doesn't violate the Community Guidelines but may be risque, intimidating, or make some users uncomfortable) behind a warning. Users must acknowledge that warning to remove the warning banner in front of sensitive content. Turning on the Show All Sensitive Content switch disables the warning and makes all sensitive content visible throughout the app

  • Advanced

    • LeiaPix Beta is a button that will allow you to opt-in to the LeiaPix Beta, which lets you try new versions of LeiaPix prior to official release

Discover

The Discover Page is where you can explore and find new content, either through Featured Content, the Hashtag Categories, or through the Search Bar.

Featured Content

Featured Content are special categories of content that appear as large thumbnails at the top of the Discover Page, below the Search bar. These include:

• Top 100: The 100 most liked images on LeiaPix

• Newest: A chronological list of all the newest content on LeiaPix

• Featured Hashtag: A hashtag that's been chosen by the LeiaPix Team to be Featured

Hashtag Categories

The Hashtag Categories below the Featured Content are the most popular hashtags curated by the LeiaPix Team. Posting new images with these hashtags gives your post a high chance of being seen.

Search Bar

The LeiaPix Search bar (labelled "Search here") lets you search for LeiaPix users and hashtags. This way you can search for a user who's content you're looking for or find a hashtag you're looking for, as well as find hashtags similar to the one you were looking for.

Notifications

The Notifications Page is where you'll find notifications about things that relate to you on LeiaPix.

Under Notifications you'll find notifications about:

• Users who liked your post

• Users who commented on your post

• Users who Followed you

• Users who mentioned you in a comment on a post

• Users who mentioned you in the caption of their post

If you tap on the User's name or profile picture, it will take you to their Profile Page. If you tap on the image thumbnail, it will take you to the relevant image.

2D to 3D Lightfield conversion couldn't be simpler. Simply open your 2D image or video in LeiaPlayer and tap on the Leia Lightfield View Switch in the bottom left hand corner. Voila, your file is now viewable in 3D Lightfield!

For images, a 3D copy of the image will be made in the LIF format, so you'll now have the original untouched 2D file as well as a 3D LIF copy.

For video, the conversion is done in real-time and your 2D video file will remain untouched. You will need to follow the above process each time you return to your video if you'd like to view it in 3D.

If your file is a Portrait Mode image from iOS with an Apple Depth Map, the embedded depth map will be used in the 3D Lightfield conversion.

To learn more about the different filetypes, go to Supported Filetypes in LeiaPlayer.

All of the following filetypes are supported in LeiaPlayer. It's organized by whether the filetype is 3D Lightfield or 2D, and then further divided by whether it's an image or video. All 3D formats are automatically detected as 3D, either through the file's metadata or through an automatic computer vision algorithm for unlabelled 3D files.

3D Lightfield Image Formats

• Leia Image Format (LIF)

  • Leia Image Format images (abbreviated as LIF) are JPG images with image metadata that may contain depth, bokeh data, and one or more images known as "views"

  • These images can be shared anywhere to any device and will automatically show as a high-resolution 2D image on all standard computing devices like laptops or phones. However, they will automatically be displayed as 3D Lightfield images on Lume Pad and other Leia devices

  • They are optimized for Lightfield View Mode by default. You can view them in stereo 3D view mode (if the LIF file has 2 views) by using the ST button in LeiaPlayer

  • This is the default image format in the Leia ecosystem, and offers the most flexibility long-term. When you edit an SBS image in LeiaPlayer, it will automatically save as LIF

• 3D SBS Images

  • Two Side-By-Side images

    • Left image on the left, right image on the right

  • File formats supported: JPG, PNG, WEBP, HEIC

• Quad Lightfield Images

  • Four images shot in a horizontal line aligned in quadrants in the following order:

    • Top Left Quadrant: Outer left image

    • Top Right Quadrant: Inner left image

    • Bottom Left Quadrant: Inner right image

    • Bottom Right Quadrant: Outer right image

  • File formats supported: JPG, PNG, WEBP, HEIC

  • Quad Lightfield images will not be interpolated in any way, they will always be displayed exactly as-is in Lightfield View Mode

  • Quad Lightfield should generally only be used by creators who understand the ins and outs of Leia Lightfield displays and know how to push the capabilities of the Lume Pad to its limits

• Apple Portrait Mode Images

  • When a user takes a Portrait Mode image on an iOS device using the iOS Camera app, it may include an embedded depth map making it a true 3D file. If LeiaPlayer finds a depth map in a photo from iPhone, you can convert the file to LIF by simply tapping the Lightfield View Mode button

  • Tip: You can tell if a depth map will be captured when taking a photo in Portrait Mode on the iOS Camera app if the icon that says "NATURAL LIGHT" on-screen turns yellow. If it's grey, no depth will be captured

  • Tip: Newer iOS devices and especially iOS devices with LiDar take the highest-quality depth maps. Older devices may not be able to capture depth maps or will take poor quality depth images

• Legacy 3D Images

  • Support for MPO and JPS filetypes

    • Support for two images embedded in an MPO or JPS image (files with 1 or 3+ images may not be supported)

    • They look like standard 2D images on many non-3D devices

    • MPO is most commonly captured on Fujifilm FinePix Real 3D cameras, Nintendo 3DS and 2DS devices, and other 3D cameras from that era

    • JPS is most commonly captured using Nvidia 3D Vision tools, such as in-game screen captures, and from other 3D software for PC

Automatic Detection of SBS and Quad Lightfield Images:

In the case that the automatic file detection feature didn't correctly identify your your SBS or Quad Lightfield image and shows it in 2D, you can force LeiaPlayer to treat image files as SBS or Quad by using the Manual 3D Tagging feature inside the app or by doing the following:

• SBS: Append "_2x1" to the end of the filename before the file extension

• Half-width SBS: Append "_half_2x1" to the end of the filename before the file extension

• Quad Lightfield: Append "_2x2" to the end of the filename before the file extension

3D Lightfield Video Formats

• 3D SBS Videos

  • Two Side-By-Side videos

    • Left image on the left, right image on the right

  • File formats supported: MP4, MKV, WEBM, H4V

  • SBS videos will open in Lightfield View Mode and be automatically interpolated to 4 views when viewed in LeiaPlayer on Lume Pad. You can use the ST button to view in the original stereo format with 2 views.

• Quad Lightfield Videos

  • Four images shot in a horizontal line aligned in quadrants in the following order:

    • Top Left Quadrant: Far left image

    • Top Right Quadrant: Middle left image

    • Bottom Left Quadrant: Middle right image

    • Bottom Right Quadrant: Far right image

  • File formats supported: MP4, MKV, WEBM, H4V

  • Quad Lightfield images will not be interpolated in any way, they will be displayed exactly as-is in Lightfield View Mode

  • Quad Lightfield should generally only be used by creators who understand the ins and outs of Leia displays and know how to push the capabilities of the Lume Pad to it's limits

Automatic Detection of SBS and Quad Lightfield Videos:

In the case that the automatic file detection feature didn't correctly identify your your SBS or Quad Lightfield video and shows it in 2D, you can force LeiaPlayer to treat video files as SBS or Quad by using the Manual 3D Tagging feature inside the app or by doing the following:

• SBS: Append "_2x1" to the end of the filename before the file extension

• Half-width SBS: Append "_half_2x1" to the end of the filename before the file extension

• Quad Lightfield: Append "_2x2" to the end of the filename before the file extension

2D Image Formats

These standard 2D image formats are supported in LeiaPlayer. You can also automatically convert any of them into 3D by tapping the Lightfield View Mode button in the view switcher in the bottom left of the UI. This will create a LIF copy of the image.

• JPG

• PNG

• WEBP

• HEIC

2D Video Formats

These standard 2D video formats are supported in LeiaPlayer. You can also automatically convert any of them into 3D by tapping the Lightfield View Mode button in the view switcher in the bottom left of the UI. This is real-time conversion and will not alter the file or make a 3D copy.

• MP4

• MKV

• WEBM

LeiaTube is an application designed to perform automatic real-time conversion of videos from streaming services such as YouTube, Vimeo, Twitch or Meta.

To convert a video, simply select it from your streaming service of choice and tap on "Share", and then tap on the LeiaTube icon. Your video will be converted and played in Lightfield mode on your Lume Pad!

LeiaPix Prints allows you to easily order prints of your favorite LeiaPix posts in 3D.

Here's how you order LeiaPix Prints:

• Open your LeiaPix Profile Page

• Tap the Prints icon

• Tap "Add Photo"

• Select up to 15 of your LeiaPix Posts

• Tap "Next"

• Choose the quantity you want of each Print

• Tap "Next"

• Tap "Add Address" and add your shipping address

• Tap "Add Payment" and add your payment information

• Tap "Order Prints" to order your LeiaPix Prints

It's that easy! LeiaPix Prints are made by hand and will be delivered within one to two weeks.

Every major 3D image format is supported by LeiaPix. This includes:

• LIF (Leia Image Format)

• SBS (Side by Side, 2x1)

• Quad Lightfield (2x2)

• MPO

• JPS

To learn more about Lightfield 3D image formats in detail, go to Supported Filetypes in LeiaPlayer.

Viewing Lightfield Images

Creating Lightfield Images

Editing Lightfield Images

Sharing Lightfield Images

LeiaFrame doesn't support every kind of file yet. LeiaFrame only supports 3D filetypes, and only supports some 3D image filetypes. Here are the files supported by LeiaFrame:

Supported Lightfield Image Formats

• LIF

• SBS (2x1)

• Quad Lightfield (2x2)

Supported Lightfield Video Formats

• SBS (2x1)

• Quad Lightfield (2x2)

Unsupported Formats

• 2D photos

• 2D videos

• MPO

• JPS

• VR180/360

LeiaViewer is your home for viewing and enhancing 3D models in an immersive Lightfield environment. You can precisely tune the depth and appearance of your model and create dynamic backgrounds for a pleasant viewing and content creation experience. You can also log in to SketchFab to search and view millions of 3D models.

File Browser

Home Screen

• Your home screen will display all of the models opened on your device, whether they are stored locally on your device or stored in temporary storage via the SketchFab explorer

• Your opened models will always appear here until you clear your cache, in which case the home screen will be empty

Supported File Types

LeiaViewer supports the following file types:

• ‌FBX

• OBJ

• STL

• GLB

• GLTF

Sketchfab Explorer

Tap the Sketchfab Explorer button in the top right corner of the home screen to view hundreds of thousands of models from the SketchFab community.

• If you dont already have an account, you will need to create one on their website

• Once the account is ready, login with your username and password

• When you select a model to view from SketchFab, it will be downloaded locally to your device's temporary storage (until you clear the app's cache)

• It will then be stored in your home screen and remain accessible when you relaunch the app

Categories

• Models are organized into 18 different categories for a simplified searching experience

Search

• Tap the magnifying glass icon in the top right corner to search for specific models

• Tap the search box at the top to enter keywords

• For example, type “Cars” and tap the check icon on your keyboard to populate a list of 3D car models you can view

• Sort by category, time frame, most liked

• Filter only models with animations by tapping the Animation box

• Filter models curated by SketchFab staff by tapping the Staff Picks box

Model Viewer

When you tap a thumbnail to open a model from your device or the Sketchfab Explorer, you will view it in LeiaViewer's Model Viewer.

Depth Slider

• The slider on the left side of the UI controls the disparity value

• As you move the slider up, the depth effect of the model will increase

Lightfield / 2D Switch

• By default the Lightfield view will be enabled, so that you can see the model in 3D

• Tap the 2D button to view the model in regular 2D

• Note that in 2D mode, the depth slider will not appear in the UI

Animations

• Tap the animations icon to open up a menu of all available animations

If you have issues loading a Sketchfab model‌, please send us the following:

• Name of model and author

• Describe the problem (is it a crash, is there an error modal, did the model fail to load?)

• Describe visual issues (does the model look different than model thumbnail image?)

• Is the center of rotation correct

Environment Adjustments

Light

• The brightness slider increase the intensity of the light shined onto the model

• Rotation X slider moves the location of the light on the X axis

• Rotation Y slider moves the location of the light source on the Y axis

• Color selector adjusts the color of the models background

• Increasing the brightness slider will increase the saturation of the colors selected

Effects

• The DOF (Depth of Field) slider takes into account how much depth is in the scene and adds a blur.

• Any object in the scene that has too high of a disparity value will be blurred

• Move the slider to the right to increase the blur effect

• This blur helps fix cross-talk issues. When objects have too much depth added to them and are not in focus, the blur helps conceal the visual issues

• The Bloom slider adjusts how the light sources hit the object

• Move the Bloom slider to the right to give the object a stronger “glow”

Materials

• The materials section allows you to select different material designs for your model

• Includes Metal, Carbon and Wireframe materials

Undo/Redo

• Tap the left facing icon to undo any change made in any of the Adjustment categories

• Tap the right facing icon to redo any changes undone in any of the adjustment categories

• Tap the Restart circle icon to bring your model back to its original appearance before you made any changes in the Adjustment categories

Supported File Types

LeiaViewer supports the following file types:

• ‌FBX

• OBJ

• STL

• GLB

• GLTF

File Recommendations

• The file size limitations in LeiaViewer are impacted by the number of triangles, polygons and vertices of each model

• If your model is not loading, it may be too large to open in LeiaViewer. in this case you should try to reduce the facecount to under 100k.

• You can do this by going into Blender (a free app) and using the decimate tool.

• You may also want to adjust texture size down to 4K or less in Photoshop

• Recommend upper limit for facecounts: 100k

• Recommend upper limit for file sizes: 50MB

• Recommend upper limit for textures: 4K resolution or less

If there is problem loading a 3D model on your device:

• Send us the model file

• Describe the problem (is it a crash, is there an error modal, did the model fail to load?)

• Is the center of rotation correct

‌Importing Models

• To import models, tap the + button in the top left corner to open the file browser

• The file browser will automatically surface all of the model files located on your device

• For model types like FBX and OBJ, your textures will need to be siblings of the model file.

• STL doesn't have textures, so its a single model format. Just load the model by clicking on it in the file browser

‌Uploading OBJ & OBJ instructions

• OBJ and FBX are the same, but you need to make sure any textures that come with model are in same directory as the model itself

• sometimes they come with a separate textures folder, you need to move all the textures into the top level directory that contains the OBJ model

• once all the files are in the right place, just tap the OBJ model in LeiaViewer file browser

Animations

• Animations are not in a separate file, they are a part of models themselves

• Animations are usually included in GLB, GLTF, FBX model files already

• They will be shown when you open the model in LeiaViewer file browser

LeiaPlayer is your hub for viewing Lightfield images stored on your Lume Pad.

Lightfield images can be found all over Lume Pad in various apps, but LeiaPlayer is your one-stop shop for viewing all the different 3D formats supported in the Leia ecosystem.

Viewing Lightfield Images You'll find all of the 2D, 3D, and Lightfield images on your device in LeiaPlayer. You can easily view them by tapping on the image thumbnails you find in the Media, Camera Roll, or File Browser tabs in LeiaPlayer. Moving media to your device To add images from other devices to your Lume Pad to view in LeiaPlayer, you have a lot of options.

If you use Google Photos, you can simply use the Google Photos app on your Lume Pad to get your favorite images and download them to your Lume Pad. The process is similar with any other cloud image service, just download the service's Android app through Google Play and download the images to your device.

If the image aren't on another service, you can use a USB cable to move them to your Lume Pad. First, get all the images to your Windows or Mac computer. Then, plug in your Lume Pad using a USB-C cable. You'll see a prompt on your Lume Pad with multiple options. Choose "Transfer Files".

Supported File types

Many kinds of 3D and Lightfield image filetypes are supported on Lume Pad, though different apps may have different levels of support.

To learn which file types are supported by LeiaPlayer, please visit Supported Filetypes in LeiaPlayer.

Where to find 3D and Lightfield Images

There are lots of ways to find 3D and Lightfield images. You'll find them all over the internet, including on the Leia Forums. You'll find them in the LeiaPix app. You can even make your own by capturing native 3D images or converting your 2D images.

LeiaFrame is a simple app that provides an awesome capability: turning your Lume Pad into a beautiful digital picture frame that can play back a slideshow of your Lightfield images.

How to use LeiaFrame

Using LeiaFrame is easy. Here's a video describing how to use LeiaFrame:

Using LeiaFrame is simple:

1. Open the LeiaFrame app

2. Tap the "Add Media" button

3. Select the images and videos you'd like to use

4. On main page of LeiaFrame, tap "SlideShow"

5. Select your Mode and Slide Speed

6. Tap "Start"

7. Voila! Your LeiaFrame Slide Show will begin!

To remove Lightfield media from LeiaFrame, tap and hold on any thumbnail in the LeiaFrame gallery, and you will see a check mark appear on it's top left corner. You can then tap and select any other image in the LeiaFrame gallery. When you're done, tap "Remove Media" to remove the files from LeiaFrame's gallery.

Using LeiaFrame as a Screensaver

LeiaFrame can be used as a screen saver for your Lume Pad. If it's enabled and Lume Pad is turned on when you plug it into power, your Lume Pad will eventually launch LeiaFrame and start a slide show. To set LeiaFrame as your screen saver, complete the following steps:

1. Go to your "Settings" app.

2. Tap "Display" on the bar on the left-hand side.

3. Tap "Advanced".

4. Tap "Screen saver" at the bottom of the list.

5. Change "Current screen saver" to "LeiaFrame".

6. Change "When to start" to "While charging".

Now, your Lume Pad will launch a LeiaFrame slide show when you plug it in to charge!

There are three major ways to create Lightfield Images:

• Shoot images with a camera

• Render images using a software tool

• Capture images inside real-time software

Shoot

You can use a variety of 2D and 3D cameras to create Lightfield images. We'll list them here from highest potential for quality to lowest.

Custom Stereo Rig

The best way to capture Lightfield 3D images is to build a custom stereo rig using two or more high-quality cameras. Doing this is difficult, but can yield the highest quality results. The distance between the sensors, the accuracy of the synchronization, the percision of the calibration, and of course the quality of the sensors and optics all play a part in the quality of the outcome.

3D Cameras

iOS Device Cameras

iPhone 13 Pro and iPhone 12 Pro series devices with LiDAR generally are expected to produce better images than LeiaCam on Lume Pad, while standard iPhone 13 and iPhone 12, as well as all iPhone 11 Pro series device and lower are generally expected to produce worse results than LeiaCam. Feel free to try and explore to see what works best yourself.

LeiaCam

One of the best ways to create Lightfield images is with LeiaCam, which shoots images and videos with immersive depth on the Lume Pad. LeiaCam lets you capture the world around you in both Lightfield and 2D shooting modes. Take images and videos with immersive depth that pops out of the screen.

Cha-Cha Method

Traditional Cameras

You can also use a variety of normal cameras to shoot 2D images to convert to Lightfield later. Your smartphone, a DSLR, or a mirrorless camera can all be used. You can even use a webcam!

Simply shoot the 2D image, and then move it onto your Lume Pad. Open the image in LeiaPlayer, and tap the Leia icon (Lightfield View Mode Button) in the bottom left hand corner. Voila, your formerly 2D image now has a Lightfield 3D copy!

Render

There are a variety of software tools that let you render out a stereo 3D or Lightfield image.

LeiaPix Converter

In LeiaPix Converter, you can upload any image you want and it will automatically estimate a depth map. You can then edit that depth map in your browser and export it as either a LIF or an SBS to view on Lume Pad.

Maya

PhotoShop

Some creators compose Quad Lightfield and SBS images in PhotoShop.

Capture

You can also capture 3D content from inside some of your favorite real-time apps on a variety of different hardware.

Photo Mode Cha-Cha Capture

Any game that has a Photo Mode with the following features can be used to take 3D photos:

• In Photo Mode, EVERYTHING on screen stops moving

• In Photo Mode, you have horizontal directional control of the camera

• After taking a photo in Photo Mode, the scene doesn't change in any way

Supported platforms include PC, PlayStation 4 and PlayStation 5, XBOX One and XBOX Series S/X, and Nintendo Switch.

Games that have Photo Modes that are known to work include Marvel's Spider-Man, Final Fantasy 7 Remake, and God of War. Games that are known NOT to work include Animal Crossing: New Horizons.

Here is an example of what a good 3D image can look like when captured in this method:

In-game 3D Capture

Some games on some platforms have built-in 3D cameras that let you natively capture from 3D from inside the app.

Platforms that support this frequently are 3D-first platforms like the PlayStation 3 and Nintendo 3DS. Games like WipEout HD on PlayStation 3 will natively capture 3D photos in MPO format when using Photo Mode to capture photos when the game is being displayed in 3D mode. Games like Animal Crossing: New Leaf, StreetPass Mii Plaza: Flower Town, and Nintendogs & Cats on Nintendo 3DS all allow for the capture of 3D screenshots in parts of the games.

Depth Buffer Injection

Being able to bring your DICOM files to your tablet is vital for any medical professional. However, having those very same files projected as 3D holograms with depth and texture is a game changer. DICOM Viewer is your pipeline to getting the medical imaging data you need onto your Lume Pad. Take DICOM-based data - whether it’s medical scans (MRI or Ultrasound) or more - and view it in true 3D on the Lume Pad’s screen. No glasses required, you can get more context and detail in ways never before seen on a tablet.

Best of all, it’s simple to get the files prepared quickly - even when timing is critical.

For the sake of this demo, A DICOMfile can be a single file or a set of several .dcm files. Here is an example of a file set for a single DICOMmodel. Each file is a layer of the model. All files will be needed to display the model correctly.

To copy a DICOMfile over to your Lume Pad, first connect your Lume Pad to your PC or Mac via USB cable. When the popup appears saying “Use USB for” select the File Transfer option.

On your PC or Mac open the folder for your Lume Pad.

Create a folder in which you want to store the model files. “Models” will be used in this example.

For every model you plan to copy over, you’ll need to create a separate folder there.

On your PC locate the model files you wish to copy over or download them from whichever service you use (Dropbox, GDrive, Onedrive…)

If the model file is zipped, it will need to be unzipped before copying over.

Once the models have been unzipped (if needed) drag the files over to the folder you created on the Lume Pad.

Once the model files are in place, you’re ready.

Inside the DICOMviewer app, touch the Open a Dicom File button.

Click on the Hamburger icon in the upper left corner.

Click the Lume Pad storage icon (LPD-10W) > Then click on the model folder and then the folder you put the model in.

Click on any of the DCM files to open the model.

That’s all there is to it. A quick drag-and-drop operation and you’re ready to get a more detailed view of your patient’s needs.

There are many ways to edit 3D images just like 2D images, including PhotoShop, GIMP, Photopea, and more. Once you get comfortable with using LeiaPlayer, you should explore using other tools to better suit your needs too.

But for now we're going to focus on the primary method for the Leia platform: LeiaPlayer. LeiaPlayer is an incredibly robust editing tool for Lightfield photos, primarily because it will take photos of any format including LIF, SBS, MPO, and JPS. Quad Lightfield images, however, can not be edited in LeiaPlayer and must be edited elsewhere.

Editing images in LeiaPlayer

To improve the visual quality and add artistic flair to your images, open an image in the gallery and then tap the edit pencil icon. You will see 5 main editing tool sections from left to right: depth, color, resize, Styles and Relighting.

Depth

The Depth editor controls the disparity of your image

The Focus slider controls the convergence value of your image

The bokeh slider controls the blur of background pixels that are behind the convergence plane. So if you move the convergence slider to the very top, there are no pixels considered as behind the convergence plane, and thus aren’t part of the background. So you won’t see any Bokeh effect even if you increase it to the top of the slider.

Color

These are straightforward chroma editors including brightness, contrast, saturation and hue.

Color Pop will remove color from pixels considered as part of the background, to make certain colors in the foreground and focus plane “pop”.

Resize

Simple tools for resizing and rotating your image. Note that if you crop an image down to a smaller size, its disparity and convergence values will increase, gibing it more of a depth feeling.

Relighting

This is where the artistic flavor gets added. Tap any of the relighting presets, and you will have different lighting configurations added to your image. These lighting placements use the depth map to get placed into different parts of the image.

Pro tip: after applying a preset and hitting check, you can open Relighting section again and add another preset. This lets you create custom presets by combining many of them together. If you keep adding them, your pictures will start to take on a very different tone.

Filters Apply styles to your images by selecting the presets. As with relighting, you can apply multiple presets to each image to create your own custom styles. Combine this with a bunch of relighting presets to make each image a unique work of art.

The sharing process for Lightfield images is a little different depending on the recipient's device.

Sharing to Leia Devices

LeiaPix

Send a Lightfield Image Directly

You can always just send a Lightfield image to another device directly. You can plug in a USB-C cable and transfer the image to another device, including a PC, Mac, or other Lume Pad. You can also move the files onto USB storage. Finally, you can use Android Nearby Share to send the file directly to another Leia device in your vicinity.

The primary filetype used on Leia devices is LIF (Leia Image Format). In a perfect world, you could just send an LIF any method you want. Unfortunately, a lot of the most popular communication platforms compress images, which turns 3D LIF files into regular 2D images.

Options for sharing LIFs:

1. Send an LIF through a known-good communication platform

2. Send a Zipped LIF through any platform

3. Send an SBS instead

Messaging Platforms that support LIF

Unfortunately, there are only a few messaging platforms that don't compress your images. They include:

• Email (choose Full Size)

• Discord

That's it! All the other major platforms we've tested do NOT support transmitting LIF files, as they compress all images and wipe data of images sent on them.

Messaging Platforms Incompatible with LIF

• Slack

• Signal

• Telegram

• WhatsApp

• Messenger

• WeChat

Zipping LIF files to send on Incompatible Messaging Platforms

To ZIP a LIF file to send over one of the above incompatible messaging platforms, you can simply put the LIF files into a folder in the Files app on your Leia device, tap the ellipsis button (three dots in the right corner), and then tap "Compress". This will ZIP the entire folder, including the LIF files. You will be able to send this through any platform that supports basic file transfer, and when the recipient unzips the folder, they will be able to access the LIF images in full Lightfield View Mode!

Export as SBS

If you don't wish to spend the time zipping the files, an easy way to get them onto another device is to export it as an SBS. To export the file as an SBS, simply go to the image in LeiaPlayer and tap the Share button, then choose Side-By-Side under Export Options. These will be able to be sent through any messaging platform that supports images. Two potential issues however: the platform may still compress the image which lowers it's visual quality, and the image will show two side by side images when it's recieved.

Sharing to Legacy 3D Devices & XR headsets

Older 3D devices and XR headsets don't support Lightfield file formats. Unfortunately, there's no golden standard for 3D file formats. Some devices use full-width SBS, some support half-width SBS, some support MPO, and some of them support multiple of the above file formats.

The first step in getting your Lightfield files to a format viewable on your target device is to find out what file format the device supports. Then, you need to find a path to getting your Lightfield image into that format.

Because full-width SBS is so popular, there is a good chance your device supports it. In many cases, all you have to do is export your Lightfield image from LeiaPlayer into an SBS file and it will simply work on your legacy 3D device or XR headset. If not, you can often easily find 3rd party programs on your computer to turn your full-width SBS file into a half-width SBS or MPO file. This makes it easy to get your favorite Lightfield images onto your other devices.

Sharing To 2D Devices

There are three major ways to view Lightfield video on Lume Pad:

• LeiaPlayer: For local video files

• LeiaTube: For video streams from YouTube, Twitch, and other services

• LeiaFlix: For renting Hollywood movies in 3D

LeiaPlayer

LeiaTube

LeiaTube is a service that lets you take an online video stream from your favorite platforms like YouTube, Twitch, Vimeo, DailyMotion, and more and have them automatically convert to Lightfield 3D. You can use 2D video streams, SBS 3D video streams, and even VR180/360 video streams.

LeiaFlix

LeiaFlix makes it easy to rent high-quality Hollywood movies on the Lume Pad. Simply make a LeiaFlix account, add a payment method, and voila! You can easily rent a huge variety of movies from studios like Warner Bros. and Universal.

Sharing Lightfield Video is easy! You can simply send the SBS or Quad Lightfield file to the other person using any communication platform that supports sending video and it will be able to be played back on the recipient's Lume Pad.

If you'd like to share it to many people, you can upload it to YouTube or another video platform that's supported by LeiaTube. If you want the video to work for users of legacy 3D devices and VR headsets as well as Lume Pad, share SBS video to YouTube.

The best way to view 3D models on Lume Pad is to use LeiaViewer. You can both view 3D models that are saved locally on your Lume Pad's storage as well for browse for new 3D models by using LeiaViewer's SketchFab Explorer. To learn more, go to the LeiaViewer page.

There are a variety of ways to create 3D models. Some methods include:

And more! To learn more about how to prepare your 3D models for Lume Pad, visit Supported Filetypes in LeiaViewer.

There is a variety of Lightfield software for Lume Pad. Some is available pre-loaded on Lume Pad, and the rest you can find in the .

To identify which apps are Lightfield and which are not, look at their app icon on your Android Home Screen or App Drawer. Lightfield apps have a white glow around their app icon. In additioin, in the default Lume Pad theme, Lightfield apps appear above all other Android apps in the App Drawer if it's enabled.

In most cases, editing Lightfield video for Lume Pad is largely the same as editing 2D video. However, there are some caveats.

One major consideration is that Lume Pad has a 16:10 ratio. If you'd like to make use of full screen on Lume Pad, you may want to create a 16:10 video. However, 16:9 and wider ratios will play on Lume Pad with horizontal black bars above and below your content, or the user can double-tap the screen in LeiaPlayer and have the video fill their screen.

There are three kinds of video you can edit into Lightfield video that can play on Lume Pad:

• 2D Video

• 3D SBS Video

• Quad Lightfield Video

2D Video

If you wish to play it back on Lume Pad using Instant 2D to 3D conversion in LeiaPlayer, then the process is identical to editing a regular 2D video.

3D SBS Video

Working in SBS is the recommended method for creating Lightfield video on Lume Pad. Users will be able to play the content back in both Stereo 3D View Mode and have it automatically converted on-the-fly in Lightfield View Mode if they wish as well.

Luckily, most major NLE's fully support 3D SBS video. These include:

Quad Lightfield Video

Currently, there is no tool to edit Lightfield native video such as Quad Lightfield. Though you can string Quad Lightfield video together in any NLE (video editing app), none of the tools in the apps are aware of the Lightfield format's structure, which limits what you can do with it. Due to this, we currently only recommend converting to Quad Lightfield as one of the last steps of your editing process if you choose to use it. In most cases, creators should probably work in SBS instead.

There are three major ways to create Lightfield video:

• Shoot video with a camera

• Render video using a software tool

• Capture video inside real-time software

Shoot

You can use a variety of 2D and 3D cameras to create Lightfield videos. We'll list them here from highest potential for quality to lowest.

Custom Stereo Rig

The best way to capture Lightfield 3D video is to build a custom stereo rig using two or more high-quality cinema cameras. Doing this is difficult, but can yield the highest quality results. The distance between the sensors, the accuracy of the synchronization, the precision of the calibration, and of course the quality of the sensors and optics all play a part in the quality of the outcome.

You should expect to use a 3rd party software tool to stitch, synchronize, and align the images. You should edit the two videos into a single SBS file for viewing on Lume Pad or editing. High disparity SBS video made in this way will look much better viewed in Stereo View Mode (ST) instead of Lightfield View Mode.

3D Cameras

LeiaCam

One of the best ways to create Lightfield video is with LeiaCam, which shoots SBS video on the Lume Pad.

To learn more about LeiaCam, check out the LeiaCam page.

Drones

One phenomenal (but slightly less common) way to capture landscapes is to use a drone for aerial videos. When run through Lightfield Studio, drone aerials are converted into Lightfield video. To learn more, go to Editing Lightfield Video.

Orbital Camera Rigs

A very high quality but VERY costly way to capture Lightfield video is to shoot it in an orbital camera rig. This is a rig of many cameras surrounding a subject that are synchronized and shot simultaneously. After stitching all the frames together consecutively in a linear video, you can use Lightfield Studio to convert it into a Lightfield video. To learn more, go to Editing Lightfield Video.

Traditional Cameras

You can also use a variety of normal cameras to shoot 2D video to convert to Lightfield later. Your smartphone, a DSLR, a mirrorless camera, or even a cinema camera can all be used. You can even use a webcam!

You can either convert from 2D to Lightfield in real-time in the LeiaPlayer app, or you can convert a professinal Lightfield video in Lightfield Studio.

To learn more about instant 2D to Lightfield conversion, go to 2D to 3D Lightfield Conversion.

To Learn more about professional quality 2D to Lightfield conversion, go to Editing Lightfield Video.

Render

There are a variety of software tools that let you render out a stereo 3D or Lightfield video.

Maya

Cinema 4D / 3DS Max / KeyShot

Some creators compose Quad Lightfield and SBS videos in other apps using custom camera configurations.

Plugins for Unreal Engine / Unity / Other game engines

There are plugins that allow you to render your game scene in SBS and Quad, and you can use that to render a Lightfield video. Leia's SDKs for Unreal Engine and Unity can be used for this to render Quad Lightfield video.

Capture

You can also capture 3D video from inside some of your favorite real-time apps or games on Windows PC.

Depth Buffer Injection