Abstract
We studied the integration of image disparities, edge information, and shading in the three-dimensional perception of complex yet well-controlled images generated with a computer-graphics system. The images showed end-on views of flat- and smooth-shaded ellipsoids, i.e., images with and without intensity discontinuities (edges). A map of perceived depth was measured by adjusting a small stereo depth probe interactively to the perceived surface. Our data show that disparate shading (even in the absence of disparate edges) yields a vivid stereoscopic depth perception. The perceived depth is significantly reduced if the disparities are completely removed (shape-from-shading). If edge information is available, it overrides both shape-from-shading and disparate shading. Degradations of depth perception corresponded to a reduced depth rather than to an increased scatter in the depth measurement. The results are compared with computer-vision algorithms for both single cues and their integration for three-dimensional vision.
© 1988 Optical Society of America
Full Article | PDF ArticleMore Like This
G. Lee Zimmerman, Gordon E. Legge, and Patrick Cavanagh
J. Opt. Soc. Am. A 12(1) 17-26 (1995)
Nasser M. Nasrabadi, Sandra P. Clifford, and Yi Liu
J. Opt. Soc. Am. A 6(6) 900-907 (1989)
Ko Sakai, Kazuki Narushima, and Natsuko Aoki
J. Opt. Soc. Am. A 23(8) 1805-1813 (2006)