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Image credits :

- cube.png
  https://commons.wikimedia.org/wiki/File:Cubic_Frame_Stucture_and_Floor_Depth_Map.jpg

- ic.png
  http://k3dcad.sourceforge.net/

- rings.png
  https://linuxgazette.net/104/TWDT.html

- shark.png
  https://commons.wikimedia.org/wiki/File:Stereogram_Tut_Shark_Depthmap.png

- All other images were generated by create_depthmap.py

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To find more images, search the internet for "depthmap".

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