Global ETD Search
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Showing 1 to 3 of 3 for “"contour tree"”.
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The contour tree image encoding technique and file format
The process of contourization is presented which converts a raster image into a discrete set of plateaux or contours. These contours can be grouped into a hierarchical structure, defining total spatial inclusion, called a contour tree. A contour coder has been developed which fully describes these …
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Recognition and matching in the presence of deformation and lighting change
… image sequences. We propose using the <EM>contour tree</EM> as a novel framework invariant to arbitrary deformations for representing and comparing images. It represents all the deformation invariant information in an image. Lighting changes greatly affect the appearance of …
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Algorithms for Analyzing Spatio-Temporal Data
… describe an efficient algorithm to compute the contour tree (a topological descriptor that succinctly encodes the contours of a terrain) of the resulting triangulated terrain.</p><p>We then look at comparing real-valued functions, by computing a distance function between their merge trees (a …