| 摘要 |
The invention relates to a white balance adjusting method, which includes steps of: obtaining the maximum and minimum spectral tristimulus values Xmax, Ymax, Zmax and X0, Y0, Z0 in a chromaticity coordinate system as well as spectral tristimulus values of each gray level for red, green and blue; converting the maximum spectral tristimulus values into maximum color stimulus values; converting the maximum color stimulus values into a hue and a chroma; computing intermediate spectral stimulus values Y1 to Ymax-1 of Y; computing intermediate spectral stimulus values of X, Z; determining spectral tristimulus values of red, green, blue colors of a white field for each gray level and corresponding gray level numbers. The white balance adjusting method of this invention executes the white field adjustment by fixing the hue and the chroma of a white point for all gray levels based on brightness variance matching gray level index variance.
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