Patent ID: 7133454

Claim:
A method for decoding compressed video information in a video decoder, which receives the compressed video information transmitted from a video coder that codes an image by carrying out motion compensation in which all pixels associated with a same patch are not restricted to have a common motion vector and the horizontal and vertical components of a motion vector for each pixel can assume an arbitrary value other than an integer multiple of a distance between adjacent pixels, said method comprising the steps of: storing a reference image which is an already decoded image in a memory; synthesizing a predicted image by using the reference image read from said memory with limiting of the horizontal and vertical components of a motion vector for each pixel to integer multiples of 1/d 1 and 1/d 2 , respectively, d 1 and d 2 being integers not less than 2, of the distance between adjacent pixels; obtaining a reconstructed image from the predicted image; and outputting the reconstructed image.