Patent ID: 8724031

Claim:
A device for image processing, comprising: a video signal receiver, for receiving at least one video signal; a color engine, comprising a local adjusting unit, for dividing pixels of an image frame of the at least one video signal into multiple pixel groups according to color hue of the pixels in a HSI color space, in which H represents hue; S represents saturation; and I represents intensity, and adjusting the luminance factors of a specific pixel group of the pixel groups having color hue in a predetermined range that is a part of a full range of color hue by moving the pixels of the specific pixel group from a region to another region of the HSI color space without changing color axes of the HSI color space, so as to locally adjust the luminance factors of the pixels of the specific pixel group under the HSI color space without changing the luminance factors of the pixels of any other pixel groups other than the specific pixel group of the image frame under the HSI color space; and an output stage, coupled to the color engine, for outputting the adjusted at least one video signal.