Patent ID: 6160913
Filing Date: 2000-12-12
Classification: H04N

Abstract:
An image processing method for detection and removal of halftone dots, said method comprising the steps of:converting a gray scale image into a binary thresholded image with halftone identifying halftone regions within the binary thresholded image, wherein the identifying halftone regions step is effected by:classifying the binary thresholded image to produce a halftone classification map;reclassifying the halftone classification map to produce a halftone reclassification map of lines with plural halftone pixels in each line;merging the halftone pixels in each line in the halftone reclassification map to produce a halftone line map; andmerging the lines of the halftone line map to produce a halftone region map; andremoving halftone dots from the identified halftone regions.