Facsimile and static presentation processing – Natural color facsimile
Patent
1995-01-09
1999-08-03
Lee, Thomas D.
Facsimile and static presentation processing
Natural color facsimile
358518, 358520, 358523, H04N 146
Patent
active
059332522
ABSTRACT:
An image processing method and apparatus for converting image data for use in a color CRT and an image processing device each having a different color reproducible range, for example, a color printer. Color component data of color image data corresponding to a most parts of a color reproducible range of the color printer having a color reproducible region which is narrower than that of the color CTR is not converted. The hue and the brightness of color component data of color image data exceeding the color reproducible range of the color printer are not substantially converted but only chromaticness is converted. A part deviated from the color reproducible range can be approximated to the outer periphery of the reproducible range. Furthermore, the most part of the color reproducible range is correctly color-reproduced and the color image is converted so as to make a portion of the same to be a compressed space of an all color space. Therefore, a color image can be converted such that a color image can be reproduced while maintaining color continuity even if the color deviates from the color reproducible range of the color printer.
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Emori Yasufumi
Koga Tadataka
Mita Yoshinobu
Onuma Kazuhiko
Yamada Osamu
Canon Kabushiki Kaisha
Lee Thomas D.
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