Enhancement of Group 3 and 4 Facsimile Standards to Include Color

摘要

With the advent of low cost color scanners and printers, color facsimile is fastbecoming a reality. Some color facsimile equipments are already appearing on the marketplace. At present there are no standards available from the CCITT or other standards groups that might ensure the interoperability of different manufacturers' equipments. The selection of a color space is possibly one of the most important decisions for color facsimile. Most importantly, the chosen color space should be device independent to allow accurate color reproduction and evaluation. The objectives of this report are to evaluate candidate color spaces, to determine modification needed to include in Group 3 and Group 4 facsimile, and to investigate methods for regenerating continuous tone images from halftones.