Stereogram 3D is tool for drawing stereogram using your iPhone. It has features for using an depth map
* to create a random dot stereogram.
You can start with samples.
Also you can draw your own shapes on the black canvas and create a graphical stereogram with the hidden picture that you have drawn.
If you already had a depth map image in the picture library, you can just load it and make the stereogram directly.
*depth map :
Usually, the depth map is a gray-scale picture, with lighter shades representing less depth, and darker shades representing more depth.
Stere3D ... (read more)