Visual Size Invariance Does Not Apply to Geometric Angle and Speed of Rotation
- 1 February 1993
- journal article
- Published by SAGE Publications in Perception
- Vol. 22 (2) , 177-184
- https://doi.org/10.1068/p220177
Abstract
The ability of humans to visually estimate geometric angle and speed of rotation was examined as a function of the spatial scale of the stimuli. Both properties are objectively invariant at different spatial scales, but the results of experiments show that the judgement of acute geometric angles as well as that of speed of rotation varies strongly and monotonically with the scale of presentation. If the image is magnified, the perceived geometric angle and the perceived speed of rotation increase. If the image is reduced in size, they decrease. This result imposes strong constraints on perceptual theories.Keywords
This publication has 16 references indexed in Scilit:
- Reversed rotary motion perceptionJournal of the Optical Society of America A, 1991
- Visual processing of rotary motionPerception & Psychophysics, 1991
- Interference in rotary motionJournal of the Optical Society of America A, 1990
- Extraction of motion parallax structure in the visual system IBiological Cybernetics, 1990
- Angular velocity discriminationPerception & Psychophysics, 1990
- The role of separation and eccentricity in encoding positionVision Research, 1990
- Visual processing of four kinds of relative motionVision Research, 1986
- Motion Parallax as an Independent Cue for Depth PerceptionPerception, 1979
- The Interpretation of Visual MotionPublished by MIT Press ,1979
- Local structure of movement parallax of the planeJournal of the Optical Society of America, 1976