Depth perception arises from a variety of depth cues.
In the absence of other visual depth cues, this might be the only perception mechanism available to infer the object's shape.
This sudden change is because the silhouette lack any depth cues from shading.
"All depth cues are completely thrown off, so the effect is lessened."
The ability to perceive the world in three dimensions and estimate the size and distance to an object depends heavily on depth cues.
"Many small predatory animals use 'defocus' as their primary depth cue," says Burge.
This disparity serves as the basis for stereopsis, one of the most important depth cues in human sight.
Numerous psychophysical findings emphasize the importance of surface completion and depth cues in visual perception.
There are several depth cues contained in the observed stripe patterns.
An important depth cue also results from the varying stripe widths along the object surface.