Edge detecting method and edge detecting device which detects edges for each individual primary color and employs individual color weighting coefficients

摘要

An edge detecting method and an edge detecting device detecting from a picture element group which is changing rapidly as compared with its surroundings an edge from within image data in which each picture element is composed of independent N numbers of dark and light data R, G, and B respectively, by calculating N sets of coefficients Wr, Wg, Wb corresponding to N numbers of dark and light data R, G, B respectively, and each picture element is judged whether it is an edge or not depending upon N numbers of dark and light data R, G, B and N sets of coefficients Wr, Wg, Wb.