Run an edge detection algorithm (the well known – for the ones who know it - canny algorithm) over the displayed image and plots the result on two optional ways. The Vector option will present the edge detected solution as polylines that may be saved as ASCII files. This is more than the traditional edge detecting operations do. The Raster option displays the edge detection as a black-and-white image that can later be used as a mask file. Note that the edge detecting is carried out over the image after it has been converted to a gray image and not on the grid that it derives from. So instead of letting the code do the conversion to a gray scale you can do it yourself and eventually shade that image. This way you have much better control on what is going to be edge detected.
Copyright © <2010>, <Joaquim Luis>
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