IMAGE SIGNAL PROCESSING METHOD AND APPARATUS
Original Publication Date: 1982-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
The need for halftone detection comes about from the methods used to process binary images. To have the best copy quality possible, an image containing halftone areas must be processed in a different manner than line copy. Par-ticularly, there is a need to detect the areas of halftone images in real time. This detection not only must detect halftone areas but also must include a low level detector for detecting line copy areas. This is needed because an error in identifying a line copy region will result in a copy with ragged edges and holes which will rapidly reduce copy quality.