IMAGE PROCESSING FILTER, IMAGE PROCESSING METHOD FOR IMAGE PROCESSING FILTER, AND IMAGE PROCESSING CIRCUIT FOR IMAGE PROCESSOR EQUIPPED WITH IMAGE PROCESSING FILTER

摘要

PPROBLEM TO BE SOLVED: To provide an image processing filter for bringing the pixel value of a pixel of interest close to the true value thereof, and for acquiring an image which is excellent in sharpness, and to provide an image processing method of the image processing filter and an image processing circuit of the image processor equipped with the image processing filter. PSOLUTION: An image processing filter for correcting the pixel value of an image includes a flatness calculation unit 40 for calculating the flatness of distribution of the pixel values of surrounding pixels positioned on the periphery of a target pixel to be filtered, and a pixel value composition unit 50 for blending the pixel value of the target pixel and the pixel value of the surrounding pixels, on the basis of a blend ratio made to correspond to the flatness calculated by the flatness calculation unit 40, and for generating a composite pixel value by combining the pixel value of the target pixel with the pixel value of the surrounding pixels. PCOPYRIGHT: (C)2009,JPO&INPIT