A system for fast erosion and dilation of Bi-level images

Computer image-processing techniques are often used in, for example, the analysis of thin sections of reservoir rock because of the large amounts of data contained in a single digitized section image. Erosion and dilation are operations frequently used in this type of work to iteratively smooth the pore perimeters and in estimating pore radii, volume, and roughness. Because of the size of each image, erosion and dilation of pore complex images is a time-consuming process. A recent method calledglobal erosion is much faster whether used on small, in-memory images or large images residing on a file. Use of this method should allow processing of larger images, or a greater number of small images, than do the standard methods.

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