shape from shading

Perception of shape properties from multiple cues

The world appears three-dimensional (3D) even though the depth dimension is lost with projection to the retina. The visual system uses different cues that carry information about the 3D aspects of the world, combining the information they convey. …

Illusory 3-D rotation induced by dynamic image shading

Observers' perceptions of the three-dimensional structure of smoothly curved surfaces defined by patterns of image shading were investigated under varying conditions of illumination. In five experiments, observers judged the global orientation and …

Percezione di superfici e illuminazione dinamica