Image analysis – Color image processing – Color correction
Patent
1995-07-27
1999-08-10
Vu, Kim Yen
Image analysis
Color image processing
Color correction
358506, 358518, 358529, H04N 146, G03F 308
Patent
active
059370874
ABSTRACT:
An image having suitable color-tone and density is formed on a recording medium so that a full-color image of an excellent color-tone depending on a OHP can be projected, wherein a CCD separates colors of an original image to read it for converting into a RGB digital signal by an A/D conversion circuit, the process corresponding to a required image signal forming condition is executed by image process means for the digital signal to generate an image signal for outputting it to an LD driver, and a full-color image forming apparatus for forming a color image on a recording medium utilizing plural kinds of color materials based on the image signal comprises the image processing means for executing a gradation conversion process for the signals of C, M and Y in a LUT 1 circuit and executing a different gradation conversion process for a black signal Bk in a LUT 2 circuit different from a LUT 1 circuit.
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Ikeda Yuichi
Saito Rie
Sasanuma Nobuatsu
Takeuchi Tatsuo
Canon Kabushiki Kaisha
Vu Kim Yen
Williams Kimberly A.
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