Patent ID: 6154492
Filing Date: 2000-11-28
Classification: G06T,H04N

Abstract:
A motion vector detection apparatus for detecting correlation between a picture consisting of a plurality of pixels and a plurality of blocks each consisting of a same number of pixels as said picture, the plurality of blocks being included within a predetermined search area containing a larger number of pixels than said picture, said motion vector detection apparatus comprising:a plurality of processor elements which are cascade-connected, each of said plurality of processor elements calculating a difference absolute value between each of the plurality of pixels included in said picture and a corresponding one of pixels included in every one of the plurality of blocks, and performing cumulative addition of the difference absolute values for every one of the plurality of blocks sequentially;a comparison means for repeatedly comparing cumulative addition values of the difference absolute values of two of the plurality of blocks by subtraction, the cumulative addition values being obtained in a processor element at a final stage, and for repeatedly selecting a smaller cumulative addition value; anda restriction means for placing restrictions on calculation of at least one of said comparison means and said plurality of processor elements, so as to give a cumulative addition value finally obtained in said comparison means a possibility of becoming a sufficiently small cumulative addition value even if the cumulative addition value is not smallest.