On independent color space transformations for the compression of CMYK images

Author

De Queiroz, Ricardo L.

Author_Institution

Xerox Webster Res. Center, NY, USA

Volume

8

Issue

10

fYear

1999

fDate

10/1/1999 12:00:00 AM

Firstpage

1446

Lastpage

1451

Abstract

Device and image-independent color space transformations for the compression of CMYK images were studied. A new transformation (to a YYCC color space) was developed and compared to known ones. Several tests were conducted leading to interesting conclusions. Among them, color transformations are not always advantageous over independent compression of CMYK color planes. Another interesting conclusion is that chrominance subsampling is rarely advantageous in this context. Also, it is shown that transformation to YYCC consistently outperforms the transformation to YCbCrK, while being competitive with the image-dependent KLT-based approach

Keywords

data compression; image coding; image colour analysis; image sampling; rate distortion theory; CMYK image compression; YCbCrK; YYCC color space; chrominance subsampling; device-independent color space transformation; image-dependent KLT-based approach; image-independent color space transformations; independent color space transformations; independent compression; rate distortion theory; Color; Distortion measurement; Image coding; Image converters; Image generation; Monitoring; Page description languages; Printing; Testing; Transform coding;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/83.791970

Filename

791970