Bigle 3D is a stereogram generator or SIS (Single Image Stereogram). To create you own stereogram, give a background, and a greyed image that contain the 3D information: So more an area is dark, so more it`s far away. Everything is realised in a Wizard. You can know save your stereogram under the main images format (BMP, PNG, JPG, TIFF…) and open even more types of images to create them.