Curvature is a basic feature for visual search tasks.
A curved target can be found efficiently among straight distractors in a visual search task. This could reflect the status of curvature as a basic feature for visual search. Alternatively, curvature could be detected as a locus of high variation in orientation. In a series of experiments it is shown that efficient search for curvature is possible even if local variation in orientation is eliminated as a cue. This suggests that curvature is part of the set of basic features for visual search and that this set is derived relatively late in the course of visual processing.
Wolfe
J M
JM
Department of Ophthalmology, Brigham and Women's Hospital, Boston, MA.
Yee
A
A
Friedman-Hill
S R
SR
D000328:Adult; D001288:Attention; D003118:Color Perception; D004193:Discrimination Learning; D005556:Form Perception; D006801:Humans; D009949:Orientation; D011601:Psychophysics; D011930:Reaction Time