发明名称 |
Color processing method and apparatus thereof using two-dimensional chromaticity separation |
摘要 |
In a color processing method and apparatus therefor using two-dimensional (2-D) chromaticity separation for minimizing color difference between an original image and a reproduced image in a color apparatus including a color television receiver, the apparatus includes an index calculator for calculating indexes for projecting R, G and B color signals or luminance signal (Y) and color difference signals (R-Y and B-Y) in a 3-D color space onto a 2-D chromaticity plane, a first look-up table in which the indexes are stored, a second look-up table in which matrix transformation coefficients which define an input-versus-output relationship between the R, G and B color signals or luminance signal (Y) and color difference signals (R-Y and B-Y) are stored and for outputting a predetermined number of transformation coefficients stored in the corresponding address designated by the output signal of the first look-up table, and a color transformation operation unit for receiving the predetermined number of transformation coefficients output from the second look-up table, and performing a matrix operation with respect to the R, G and B color signals or luminance signal (Y) and color difference signals (R-Y and B-Y). The color processing apparatus allows real time processing owing to its simplified structure.
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申请公布号 |
US5867286(A) |
申请公布日期 |
1999.02.02 |
申请号 |
US19960774653 |
申请日期 |
1996.12.30 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE, SEONG-DEOK;KIM, CHANG-YEONG |
分类号 |
H04N9/64;G06T1/00;H04N1/46;H04N1/60;H04N9/73;(IPC1-7):G03F3/08;G06K9/00;H04N9/68 |
主分类号 |
H04N9/64 |
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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