| 摘要 |
<P>PROBLEM TO BE SOLVED: To properly correct contrast in accordance with each image. <P>SOLUTION: An input-output characteristic setting part generates an S-shaped input-output characteristic curve CL 21 in which an output contrast component monotonously increases with respect to an input contrast component and an inclination becomes maximum contrastGain/γ_comp when the value of the input contrast component is around 0. A gain characteristic calculating part generates a contrast gain curve representing the characteristic of a gain value with respect to the input contrast component on the basis of the input-output characteristic curve CL 21. A contract correcting part corrects the contrast component of each pixel on the basis of the contrast gain curve and a gain value calculated on the basis of either the input contrast component or a luminance value. This invention is applicable, for example, to a digital video camera. <P>COPYRIGHT: (C)2009,JPO&INPIT |
