发明名称 |
Method for halftoning a multi-channel digital color image |
摘要 |
A method for halftoning a multi-channel digital color image having an x,y array of color pixel values, includes the steps of: providing a matrix of dither values for each color channel of the digital color image wherein two or more of the matrices of dither values are designed jointly to minimize a visual cost function; for each color channel modularly addressing the matrix of dither values with the location of a pixel in the digital color image to obtain an addressed dither value; comparing the addressed dither value for each color channel with the pixel value for the corresponding color channel to determine an output halftone image value for each color channel; and repeating steps b and c for each pixel in the digital image.
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申请公布号 |
US6091849(A) |
申请公布日期 |
2000.07.18 |
申请号 |
US19980113268 |
申请日期 |
1998.07.10 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
SPAULDING, KEVIN EDWARD;MILLER, RODNEY L.;SCHILDKRAUT, JAY S. |
分类号 |
B41J2/52;B41J2/525;G06T5/00;H04N1/405;H04N1/52;H04N1/60;(IPC1-7):G06K9/00 |
主分类号 |
B41J2/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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