Segmentation of Textured Images by Pyramid Linking
A pyramid linking algorithm for texture segmentation is presented. It is based on the computation of spatial properties of long, straight edge segments at fixed orientations. Features are computed for each edge segment in terms of the distances to the nearest neighboring edge segments of given orientations. This produces a set of sparse “edge separation maps” of features which are then used as the basis of a pyramid linking procedure for hierarchically grouping edges into homogeneously textured regions. Segmentation is performed in one bottom-up pass of linking nodes to their most similar parent. Results are shown using both the raw and smoothed edge separation features. All of the steps of the procedure can be efficiently implemented as parallel operations on a pyramid machine.
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