| 摘要 |
An efficient method of computing gamma correction tables of the present invention includes the following steps: determining a gamma correction equation between luminance values produced between two representations; determining at least one polynomial approximation to the gamma correction equation, the at least one polynomial approximation having coefficient values cI; for each coefficient value cI, grouping together all of the coefficient values over a range of gamma and then fitting a polynomial equation to each grouping to get a respective coefficient polynomial equation; computing coefficients for a given value of gamma using the coefficient polynomial equations; computing gamma conversion transformations using the computed coefficients and a simplified mathematical formula; and storing the computed gamma conversion transformations in a gamma correction table.
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