The disclosure is directed to techniques for gamut mapping with modified
black point compensation (BPC). The gamut mapping techniques promote
well-distributed tone compression so that substantial loss of detail in
highlight and shadow regions can be avoided. The gamut mapping techniques
may be particularly useful in converting rich saturated images, such as
RGB photographs, for presentation as much less saturated output, such as
typical newsprint. Other example applications include conversion of CMYK
Specifications for Web Offset Printing (SWOP) printing to CMYK
Specifications for Newsprint Advertising Production (SNAP) newsprint, and
conversion of RGB photos with camera profiling software to CMYK for all
types of printing.