Patent ID: 7375762

Claim:
An image interpolation method of interposing an interpolation image between a first reference image and a second reference image adjacent to the first reference image in terms of time, the method comprising: searching a motion vector from different pairs of blocks on the first reference image and the second reference image symmetrically; extracting a first image block and a second image block from the first reference image and the second reference image, respectively, the first image block and the second image block being located by the motion vector; determining a region determination threshold using an absolute difference between paired opposite pixels of the first image block and the second image block; extracting from each of the first image block and the second image block a first pixel region that the absolute difference is smaller than the region determination threshold; and generating an interpolation image based on a pixel value of a second pixel region of the to-be-interpolated block that is obtained from a pixel value of the first pixel region of each of the first image block and the second image block, the second pixel region corresponding to the first pixel region.