Patent ID: 7551774

Claim:
An image processing apparatus for correcting a hue and a saturation in an input video signal of a moving picture in real time, comprising: a signal separation unit configured to separate a luminance signal, and two color-difference signals from the input video signal; an extracting unit configured to extract the hue and the saturation from the input video signal, the extracting unit including a first calculating unit configured to calculate the hue based on a ratio of the two color-difference signals with reference to a look-up table; and a second calculating unit configured to calculate the saturation based on the two color-difference signals; a determining unit configured to determine a correcting amount according to the hue and the saturation extracted by said extracting unit; and a correcting unit configured to correct the hue and the saturation of the input video signal based on the determined correcting amount of said determining unit and a luminance level of the input video signal.