Qualitative Depth and Shape from Stereo, in Agreement with Psychophysical Evidendence

dc.creator	Weinshall, Daphna
dc.date	2004-10-04T14:36:59Z
dc.date	2004-10-04T14:36:59Z
dc.date	1987-12-01
dc.date.accessioned	2013-10-09T02:42:34Z
dc.date.available	2013-10-09T02:42:34Z
dc.date.issued	2013-10-09
dc.identifier	AIM-1007
dc.identifier	http://hdl.handle.net/1721.1/6053
dc.identifier.uri	http://koha.mediu.edu.my:8181/xmlui/handle/1721
dc.description	Obtaining exact depth from binocular disparities is hard if camera calibration is needed. We will show that qualitative depth information can be obtained from stereo disparities with almost no computations and with no prior knowledge (or computation) of camera parameters. We derive two expressions that order all matched points in the images in two distinct depth-consistent ways from image coordinates only. One is a tilt-related order $\\lambda$, the other is a depth-related order $\\chi$. Using $\\lambda$ demonstrates some anomalies and unusual characteristics that have been observed in psychophysical experiments. The same approach is applied to qualitatively estimate changes in the curvature of a contour on the surface of an object, with either $x$- or $y$-coordinate fixed.
dc.format	20 p.
dc.format	1353851 bytes
dc.format	1040681 bytes
dc.format	application/postscript
dc.format	application/pdf
dc.language	en_US
dc.relation	AIM-1007
dc.subject	stereo vision
dc.subject	qualitative depth
dc.subject	induced-effect
dc.subject	motion
dc.title	Qualitative Depth and Shape from Stereo, in Agreement with Psychophysical Evidendence

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