Method and apparatus for RGB color conversion that can be...

Details Method and apparatus for RGB color conversion that can be... Method and apparatus for RGB color conversion that can be...

2007-12-25

2007-12-25

Alavi, Amir (Department: 2624)

Image analysis

Color image processing

Color correction

Reexamination Certificate

active

11181196

ABSTRACT:
Methods and apparatus are provided for performing reversible color conversion on digital image data using integer computer arithmetic. This color conversion provides an approximation of the luminance component to the luminance as perceived by the human visual system with any necessary precision (Kd) and without multiplication and division operations other than shifts. The color conversion can be used in conjunction with a lossless or lossy compression/decompression process. Other embodiments, including non-reversible and non-integer color conversion, are also provided.

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M. Rabbani et al., “An overview of the JPEG 2000 still image compression standard”, Signal Processing: Image Communication 17 (2002) 3-48.
“Journal Issue Dispatch Dates” for journal “Signal Processing: Image”, http://www.elsevier.com/cgi-bin/inca/dispatch/dispatch.cgi?pubidt=505651, printed out on Mar. 19, 2002.

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