Generating color-correction look-up-table addresses by multi-lev

Details Generating color-correction look-up-table addresses by multi-lev Generating color-correction look-up-table addresses by multi-lev

1996-02-26

1999-05-18

Zimmerman, Mark K.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 89, G09G5/06

Patent

active

059054905

ABSTRACT:
In generating instructions for a printer to render a digitally represented image, addresses for a color-correction look-up table that sparsely samples the source-image color space are generated from the source image by multi-level dithering, and no interpolation is performed to generate the color-corrected image from the values thus fetched from the table, even though it samples the source-image color space only sparsely. In a system in which dithering is also used to generate display commands from the corrected image's pixel values, the effective color resolution is essentially the same as that which would have resulted from interpolation instead of table-look-up-input dithering, but the computation cost is significantly less.

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