Gamut clipping in color image processing
Refereed conference paper presented and published in conference proceedings

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AbstractMultiple color coordinate Systems are usually involved in color image applications or systems. Forward and backward transformations are used to switch between color coordinate systems. The out of gamut problem emerges when the color coordinate systems' gamut is different. Conventional approaches, including clipping R, G, B values and clipping luminance value are not ideal as they both produce severe error in the luminance component of the resulting color or reduce the contrast of the resulting image. We propose to clip the saturation value when a vector is out of the gamut of the LHS or YIQ space using the saturation processing equations. We have conducted experiments to compare three different clipping approaches. The experimental results show that the saturation clipping approach outperforms the other two approaches, in the sense that it can keep the luminance value unchanged. In addition, the contrast of the image produced by saturation clipping is much better than those produced by other clipping approaches.
All Author(s) ListYang CC, Kwok SH
Name of ConferenceIEEE International Conference on Image Processing (ICIP 2000)
Start Date of Conference10/09/2000
End Date of Conference13/09/2000
Place of ConferenceVANCOUVER
Country/Region of ConferenceCanada
Pages824 - 827
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesComputer Science; Computer Science, Artificial Intelligence; Engineering; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology; Radiology, Nuclear Medicine & Medical Imaging

Last updated on 2020-28-11 at 01:02