Citation

Todd JT, Koenderink JJ, Van Doorn AJ, Kappers AM. J. Exp. Psychol. Hum. Percept. Perform. 1996; 22(3): 695-706.

Affiliation

Department of Psychology, Ohio State University, Columbus 43210, USA. jtodd@magnus.acs.ohio-state.edu

Copyright

(Copyright © 1996, American Psychological Association)

DOI

unavailable

PMID

8666959

Abstract

Observers' perceptions of a male and a female torso were investigated using monocular and stereoscopic images under varying conditions of illumination. Observers judged the shapes of these torsos by adjusting a gauge figure to estimate the local slant and tilt at numerous probe points arranged in a lattice over the torso's surface. The results revealed that the judged surfaces in the monocular and stereoscopic conditions were related by an affine stretching transformation in depth that accounted for approximately 95% of the between-condition variance. There was also a strong affine component between the judgments obtained for the different illumination directions, although a further analysis of the residuals indicated that changing the direction of illumination influenced perceived structure in a piecewise manner.

Language: en