PIXEL CLASSIFICATION AND HIGHLIGHTING OF HANDWRITTEN MATERIAL USING FUZZY LOGIC IN FORM IMAGES

摘要

In a method for processing image data, at least one section of a form (10) is raster scanned and converted into a digital image with image points (22, 24, 26), the colour of each image point (22, 24, 26) being represented as tone H, saturation S and brightness B. Using fuzzy technology, the membership of the image points (22, 24, 26) and their colours in colour categories (UB, SF, BF) is determined by means of membership functions and a grey value GW is allocated to each image point (22, 24, 26) depending on the thus determined colour category (UB, SF, BF).