If one considers only local neighborhoods for segmenting an image, one gets contours whose strength is often poorly estimated. A method for reevaluating the contour strength by taking into account non local features is presented: one generates a fixed number of random germs which serve as markers for the watershed segmentation. For each new population of markers, another set of contours is generated. ”Important” contours are selected more often. The present paper shows that the probability that a contour is selected can be estimated without performing the effective simulations.
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