发明名称 |
Image processing apparatus, method of setting tonal gradation conversion characteristics, and computer program |
摘要 |
Four test patterns are concurrently displayed on a display of a computer. The test patterns include respective backgrounds and contrast areas. The test patterns, different from each other in pixel value, have identically shaped contrast areas. The contrast between the background and the contrast area remains unchanged from test pattern to test pattern. The contrast areas are adjusted in contrast with the pixel value of the background fixed until the test patterns look the same.
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申请公布号 |
US2004105596(A1) |
申请公布日期 |
2004.06.03 |
申请号 |
US20030702170 |
申请日期 |
2003.11.04 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
INOUE HITOSHI |
分类号 |
G06T5/00;G09G5/00;G09G5/10;G09G5/36;H04N1/407;H04N5/202;(IPC1-7):G06K9/40;G06K9/00 |
主分类号 |
G06T5/00 |
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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