Systematic distortions of shape from stereopsis

The effectiveness of disparity information in defining 3-D shape was investigated by means of judgements of the shape of cylindrical continuous curved surfaces presented as random dot stereograms. At a close viewing distance, truly circular cylinders appeared elongated; at an intermediate distance,...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Vision research (Oxford) 1991, Vol.31 (7), p.1351-1360
1. Verfasser:	Johnston, Elizabeth B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Binocular vision Biological and medical sciences Depth constancy Depth Perception - physiology Disparity 3-D shape perception Female Fundamental and applied biological sciences. Psychology Humans Mathematics Pattern Recognition, Visual - physiology Perception Perceptual Distortion - physiology Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychometrics Space life sciences Stereopsis Vision Vision Disparity - physiology Vision, Binocular - physiology
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The effectiveness of disparity information in defining 3-D shape was investigated by means of judgements of the shape of cylindrical continuous curved surfaces presented as random dot stereograms. At a close viewing distance, truly circular cylinders appeared elongated; at an intermediate distance, perception was close to veridical; and, at a far distance, cylinders appeared flattened. Indirect measures of scaling distance were calculated from these data. The results strongly suggest that the observed shape distortions are a consequence of scaling horizontal disparities with an incorrect measure of egocentric distance.
ISSN:	0042-6989 1878-5646
DOI:	10.1016/0042-6989(91)90056-B