Patent ID: 8300152

Claim:
A TV image adjusting apparatus that adjusts a luminance value of a target pixel of an image frame, the apparatus comprising: a buffer that stores the luminance value of the target pixel and luminance values of a plurality of pixels adjacent to the target pixel; a weight calculator, coupled to the buffer, that performs a variance calculation on the luminance values of the plurality of pixels adjacent to the target pixel to generate a luminance variance, generates a weight index according to the luminance variance, and performs a decay function calculation on the weight index to generate a weight distribution, the weight distribution being inversely proportional to distances between the plurality of pixels adjacent to the target pixel and the target pixel; and a luminance adjusting unit, coupled to the buffer and the weight calculator that performs a weight calculation on the luminance value of the target pixel and the luminance values of the plurality of pixels adjacent to the target pixel according to the weight distribution to generate an updated luminance value of the target pixel.