发明名称 |
Chrominance signal processing apparatus and method |
摘要 |
<p>The present invention relates to a chrominance signal processing apparatus (510) and method for providing optimal color processing according to the hue of the color image data. Red, green and blue signals are input to a chroma composition ratio determination circuit (550) that generates and outputs the RGB color composition ratio (± : ² : ³) . A chroma suppression luminance signal generating circuit (560) then generates a chroma suppression luminance signal Ya based on the RGB signals and the color composition ratio. A chroma suppression gain determination circuit (570) outputs the gain for the chroma suppression luminance signal based on a table in which output gain setting values corresponding to the chroma suppression luminance signals are recorded. Multipliers (581, 582) then multiply input color-difference signals Cr, Cb by the gain and output a suppressed color-difference signals (Cr x G, Cb x G) according to the color composition ratio (±:²:³)</p> |
申请公布号 |
EP1763257(A2) |
申请公布日期 |
2007.03.14 |
申请号 |
EP20060126146 |
申请日期 |
2002.08.13 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
FUKUI, TAKAAKI;IKEDA, EIICHIRO |
分类号 |
G06T1/00;H04N9/64;H04N1/46;H04N1/60;H04N9/07;H04N9/68 |
主分类号 |
G06T1/00 |
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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