COMPRESSION OF GREY DIGITAL IMAGES USING GREY SEPARATIONS
Original Publication Date: 1990-Dec-31
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
Future Electronic and System Reprographic imaging products will be capable of rendering grey images, that is, images which specify a particular grey level at each spatial pixel site. Multi-bit per pixel images will typically fail to compress when processed with standard compression techniques like those specified by CCITT. Furthermore, because the size of these images (as measured by the total bits needed to describe the image) is substantially larger than the equivalent binary image, the processing bandwidth needed to compress an image gets much larger.