Editing Ambiguous image (section)

==Occlusion==
Many ambiguous images are produced through some occlusion, wherein an object's texture suddenly stops. An occlusion is the [[visual perception]] of one object being behind or in front of another object, providing information about the order of the layers of texture.<ref name="Wolfe"/> The illusion of occlusion is apparent in the effect of illusory contours, where occlusion is perceived despite being non-existent. Here, an ambiguous image is perceived to be an instance of occlusion. When an object is occluded, the visual system only has information about the parts of the object that can be seen, so the rest of the processing must be done deeper and must involve memory.