Patent ID: 6154491
Filing Date: 2000-11-28
Classification: H04N

Abstract:
A motion vector detecting method comprising the steps of:producing one of a primary search reference picture and a primary search motion vector detecting picture by sub-sampling first and second fields of an interlaced picture in the same phase in the horizontal direction;producing the other of the primary search reference picture and the primary search motion vector detecting picture by sub-sampling first and second fields of an interlaced picture in different phases in the horizontal direction;searching the primary search reference picture for a primary search reference block which is a partial area similar to a primary search motion vector detecting block which is a partial area of the primary search motion vector detecting picture, thereby detecting candidate motion vectors each indicating the location of the primary search reference block relative to a respective one of the first and second fields of the primary search motion vector detecting block; andperforming secondary search with the candidate motion vectors taken as the center of search to detect a final field motion vector and a frame motion vector.