Method for correcting digital tongue picture colour cast |
Title： |
| Method for correcting digital tongue picture colour cast |
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Application Number： |
200610113870 |
Application Date： |
2006/10/20 |
Announcement Date： |
2007/04/11 |
Pub. Date： |
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Publication Number： |
1945627 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G06T 5/00, H04N 1/60, A61B 5/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Bai Jing, Zhang Yonghong, Wu Jia, Cui Shanshan, Sun Xiaojing |
Key Words： |
tongue, picture colour cast, correcting method |
Abstract： |
This invention relates to a digital correction method of tongue color deflection, the feature is as the following steps: making white equation emendation on the image of Macbeth color adjusting calibration card from flash lamp and switching to the tonality, saturation, lightness space to get the corresponding adjustment parameters by cooperation with the standard value of color card. Then shoot the tongue picture by digital camera, and make white equation emendation switching to the tonality, saturation, lightness space, which is then adjusted by using the above parameter and returned into the red, green and blue spaces. Finally, use gamma value to adjust the pictures of red, green and blue spaces. The gamma value of curve emendation is combined by the least double multiplication with the light value of Macbeth card standard and the average value of picture light. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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