发明名称 |
Color image processing method and apparatus |
摘要 |
A color type converting means 3 generates, from a primary color image, an intensity image in a hue/saturation/intensity space normalized in a cylindrical coordinate system. A region dividing means 6 analyzes the texture of the intensity image and divides the intensity image into a plurality of regions on the basis of the result of the analysis. A density conversion curve generating means 7 generates a density conversion curve for each intensity image by smoothing the histogram for each divided region. A density converting means 8 executes density conversion of the intensity image by using the smoothing a histogram of each region. A region dividing means 5 generates a primary color image by using the intensity image which is density-converted.
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申请公布号 |
US7155053(B2) |
申请公布日期 |
2006.12.26 |
申请号 |
US20030436600 |
申请日期 |
2003.05.13 |
申请人 |
KEIO UNIVERSITY |
发明人 |
NAKAJIMA MASATO;ANDO SHINGO;IMAI SATOKO |
分类号 |
G06K9/00;H04N1/56;H04N1/60 |
主分类号 |
G06K9/00 |
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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