Image analysis – Color image processing
Patent
1996-05-16
1998-01-13
Coles, Sr., Edward L.
Image analysis
Color image processing
358448, 358456, 358459, 358534, 382162, H04N 140, H04N 146
Patent
active
057087288
ABSTRACT:
Input chromatic densities IC, IM, and IY are first converted into corrected chromatic densities I'C, I'M, and I'Y based on the input density IK. The input density IK is then added with the corresponding weighted error sum EK, so that a modified density IKmod is obtained. Similarly, the corrected chromatic densities I'C, I'M, and I'Y are added with the weighted error sums EC, EM, and EY, respectively, so that modified densities ICmod, IMmod, and IYmod are obtained. Then, the modified density IKmod is compared with the threshold T, and an output OK is determined. When the obtained output OK is zero, the ICmod, IMmod, and IYmod are compared with the threshold T, and output data OC, OM, and OY are obtained. On the other hand, when the obtained output OK is a dot-forming data, the output data OC, OM, and OY are forcibly set to a non-dot forming data.
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Brother Kogyo Kabushiki Kaisha
Coles Sr. Edward L.
Williams Kimberly A.
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