发明名称 |
Method of effecting gradation and color correction of a composite image |
摘要 |
A method of making color and gradation correction performs color and gradation correction differently for a human subject image and a computer graphic image before or after composing these images. A gradation correction is carried out by the use of linear table data written in a look-up table for computer graphic images and non-linear table data for human subject images. A color correction circuit for transforming image data by the use of a matrix calculation comprises three look-up table memories and an adder for adding together outputs from the look-up table memories for each color to be color corrected. In these three look-up table memories, different table data are written in, according to the kinds of human subject image and computer graphic image. There are provided a plurality of different table data for human subject images and computer graphic images, respectively and suitable table data are selected according to a human subject image and a computer graphic image to be composed.
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申请公布号 |
US5042078(A) |
申请公布日期 |
1991.08.20 |
申请号 |
US19880208616 |
申请日期 |
1988.08.20 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
OSHIKOSHI, YUJI;KITO, EIICHI |
分类号 |
G06K15/00;G06K15/12;H04N1/407;H04N1/60 |
主分类号 |
G06K15/00 |
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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