Automatic digital detection of edges and diameter in pref. X=ray images

摘要

A site-specific template is used with correlation instead of simple convolution to compute the dia. directly from the distance between site-specific maxima. The computation time is more than halved by a sub-optimal correlation function and normalisation with the square of the standard deviation within one line of the image. The remaining small quantity of pixels is analysed by an adaptive method to refine the edge detection. The background (1, 2) is corrected and the max. of the blood vessel profile (3) is computed. The refinement is converted pref. by a fuzzy neural network.