Texture fields and texture flows: sensitivity to differences.
There are two large classes of textures, those with an overall orientation structure (texture flows) and those without (texture fields). We investigate human sensitivity to detecting a patch of texture field within a texture flow psychophysically by using random not Moiré patterns. The resultant sensitivity, as a function of patch-size and path-length, is then related to a computational model of orientation selection, which reveals a connection between texture structure and the estimation of curvature. Finally, the connection back to curvature is confirmed by demonstrating a similarity between the patch sensitivity data and previous data on sensitivity to corners in flow patterns.
Hel Or
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Computer Vision and Robotics Laboratory, McGill University, Montréal, Quebec, Canada.
Zucker
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D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D015903:Moire Topography; D009949:Orientation; D011601:Psychophysics