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Motion-vector-estimating-apparatus

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Motion vector estimating apparatus

Details

Inventors: Sugiyama, Kenji;
Assignee: Victor Company of Japan, Ltd. (Yokohama, JP)
Primary Examiner: Peng; John K.
Assistant Examiner:
Attorney, Agent or Firm: Lowe, Price, LeBlanc & Becker

A motion vector estimating apparatus includes a plurality of block matching estimators generating block matching values from an input video signal respectively. The block matching values represent likelihoods of motion vectors with respect to an actual motion respectively. Each of the block matching values is periodically reset. A plurality of convolution adders receive the block matching values respectively. Each of the convolution adders provides predetermined weights to the block matching values and adds the weighted block matching values to obtain an output value. The smallest of the output values from the convolution adders is selected and a vector related to the smallest values is outputted as a final motion vector.

DETAILED DESCRIPTION It is an object of this invention to provide an improved motion vector estimating apparatus.
According to a first aspect of this invention, a motion vector estimating apparatus comprising a plurality of block matching estimators generating block matching values from an input video signal respectively, wherein the block matching values represent likelihoods of motion vectors with respect to an actual motion respectively a plurality of convolution adders receiving the block matching values respectively, wherein each of the convolution adders provides predetermined weights to the block matching values and adds the weighted block matching values to obtain an output value; and means for selecting a smallest value of output values from the convolution adders, and outputting a vector related to the smallest value as a final motion vector.
According to a second aspect of this invention, a motion vector estimating apparatus comprising a plurality of block matching estimators generating block matching values from an input video signal respectively, wherein the block matching values represent likelihoods of motion vectors with respect to an actual motion respectively; a plurality of convolution adders receiving the block matching values respectively, wherein each of the convolution adders includes nonlinear converters, and the converters convert block matching values for blocks around an estimation-object block with a nonlinear conversion characteristic, and wherein each of the convolution adders provides predetermined weights to output values from the nonlinear converters and the block matching value for the estimation-object block and adds the weighted values to obtain an output value; and means for selecting a smallest value of output values from the convolution adders, and outputting a vector related to the smallest value as a final motion vector.
Each of the block matching estimators may include apparatus for periodically resetting the block matching values.

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