Browsing AI Memos (1959 - 2004) by Title
Now showing items 1216-1217 of 1217
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Zero-Crossings and Spatiotemporal Interpretation in Vision
(1982-05-01)We will briefly outline a computational theory of the first stages of human vision according to which (a) the retinal image is filtered by a set of centre-surround receptive fields (of about 5 different spatial sizes) ... -
Zero-Crossings on Lines of Curvature
(1984-12-01)We investigate the relations between the structure of the image and events in the geometry of the underlying surface. We introduce some elementary differential geometry and use it to define a coordinate system on the ...