发明名称 |
Neutral pixel detection using color space feature vectors wherein one color space coordinate represents lightness |
摘要 |
A method for neutral pixel detection using color space feature vectors wherein one color space coordinate represents lightness is provided. The method includes the following steps: a) receiving an input image represented in a first color space; b) converting the input image to a second color space wherein one coordinate represents lightness; c) selecting a pixel in the second color space representation to be classified; d) computing second color space feature vectors associated with the selected pixel; and e) classifying the selected pixel between neutral and color classes based on the values computed for the second color space feature vectors. Typically, the input image is processed using a smoothing filter to create a smoothed input image prior to the conversion to the second color space. The method can be adapted to page processing or strip processing schemes with respect to the input image.
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申请公布号 |
US2003206307(A1) |
申请公布日期 |
2003.11.06 |
申请号 |
US20020137677 |
申请日期 |
2002.05.02 |
申请人 |
XEROX CORPORATION |
发明人 |
HANDLEY JOHN C.;LIN YING-WEI |
分类号 |
H04N1/56;(IPC1-7):H04N1/60 |
主分类号 |
H04N1/56 |
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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