Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1995-07-05
1996-04-30
Chin, Tommy P.
Television
Image signal processing circuitry specific to television
Motion vector generation
348700, 348412, 348413, 348415, 348416, H04N 728
Patent
active
055129625
ABSTRACT:
A motion vector detection apparatus for a moving picture which can detect a motion vector of a half pel accuracy at a high speed by pipeline processing. The motion vector detection apparatus comprises a buffer memory for storing pel data of a search area within a reference frame required for detection of a motion vector, another buffer memory for storing peldata of an object block for motion vector detection, a half pel interpolation circuit for interpolating half pels horizontally and vertically into the pel data stored in the first buffer memory, a motion vector detection circuit for performing block matching between peldata of a search area outputted from the pelinterpolation circuit and the pel data stored in the second buffer memory and outputting a sum total of absolute values of differences between the individual pels for a plurality of candidate vectors, and a minimum value detector for detecting a minimum value of the output of the motion vector detection circuit and outputting the value of the candidate vector corresponding to the minimum value as a motion vector.
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Proceedings of the IEEE 1993 Custom Integrated Circiuts Conference, 9 May 1993, pp. 1121-1124, Uramoiti et al, "A Half-Pel Precision Motion Estimation Processor for NTSC-Resolution Video".
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Chin Tommy P.
NEC Corporation
Rao Anand S.
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