phonedepth

This repository hosts some small utilities I wrote while looking into the way modern phones store depth data inside their JPEGs.

Example

This are the color image and depth map from a photo taken with a Samsung S9+.

Usage

The most useful tool is extract_depthmap.c which was tested to work with these phones:

• Apple iPhone X
• Apple iPhone XR
• Apple iPhone XS
• Huawei Mate 20
• Huawei Mate 20 Lite
• Huawei Mate 20 Pro
• Huawei P20 Pro
• Huawei P30 Pro
• Samsung A7
• Samsung A9
• Samsung S9+
• Samsung S10
• Samsung S10e
• Samsung S20 FE
• Samsung S20 Ultra

However, the firmware version might be more important than the actual phone.

In order to use it you have to compile it:

gcc -o extract_depthmap extract_depthmap.c

and then run it:

./extract_depthmap /path/to/file.jpg

It will create some files in the current directory:

• cv.jpg -- the color image
• dm.pgm or dm.jpg -- the depth map
• extra.jpg -- some iPhones store an additional mask. If this file is garbage you should just ignore it.

Feel free to contact me if you have a phone that stores depth data and want it supported.