Image analysis – Color image processing
Patent
1996-09-20
1998-05-19
Boudreau, Leo
Image analysis
Color image processing
382167, 358518, 358504, 348227, 348602, G06K 900
Patent
active
057546827
ABSTRACT:
A picture processing apparatus in which the color appearance of a soft copy image and that of a hard copy picture coincide with each other with high precision despite difference in the optical environment. A first conversion unit 12 is responsive to the optical environmental parameters specifying a picture handled by an input device 3 to convert picture data from the input device 3 corresponding to a picture handled by the input device 3 into index data for color appearance associated with the appearance under the ambient light. A second conversion unit 14 is responsive to the optical environmental parameters specifying the luminance of the ambient light in which to observe the picture handled by the output device 4 to convert the color appearance index data obtained by the first conversion unit 12 so that the color appearance under the ambient light will be coincident with the color appearance under the ambient light under which to view the picture handled by the input device 3. The resulting appearance index data is sent to an output device 14.
REFERENCES:
patent: 4500919 (1985-02-01), Schreiber
patent: 5532848 (1996-07-01), Beretta
Hunt, R.W.G., "Revised Colour-Appearance Model for Related and Unrelated Colours", Color Research and Application, vol. 16, No. 3, Jun. 1991.
Boudreau Leo
Kananen Ronald P.
Novik Dmitry A.
Sony Corporation
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