Method and device for video image processing, calculating the similarity between video frames, and acquiring a synthesized frame by synthesizing a plurality of contiguous sampled frames

Abstract

To acquire a high-resolution frame from a plurality of frames sampled from a video image, it is necessary to obtain a high-resolution frame with reduced picture quality degradation regardless of motion of a subject included in the frame. Because of this, between a plurality of contiguous frames Frand Fr, there is estimated a correspondent relationship. Based on the correspondent relationship, the frames Frand Frare interposed to obtain first and second interpolated frames Frand Fr. Based on the correspondent relationship, the coordinates of the frame Frare transformed, and from a correlation value with the frame Fr, there is obtained a weighting coefficient α(x°, y°) that makes the weight of the first interpolated frame Frgreater as a correlation becomes greater. With the weighting coefficient, the first and second interpolated frames are weighted and added to acquire a synthesized frame Fr.