| 摘要 |
<p>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 cr; for each coefficient value cL 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. <IMAGE></p> |
