Title:
動きベクトル生成装置、動きベクトル生成方法及びコンピュータプログラム
Document Type and Number:
Japanese Patent JP5639444
Kind Code:
B2
Abstract:
A motion vector generation apparatus which generates a motion vector utilized to execute motion-compensated encoding based on comparison between a block to be encoded in an image to be encoded and a reference block in a reference image. The apparatus sequentially selects a candidate from a plurality of motion vector candidates, sequentially calculates differences between pixel values of the block to be encoded and pixel values of the reference block corresponding to respective motion vector candidates, calculates, as an average difference, differences between an average pixel value obtained by averaging the pixel values of the block to be encoded and respective pixel values of the block to be encoded, decides a weighting coefficient based on a ratio between a minimum difference and the average difference, and calculates, for each selected motion vector candidate, an evaluation value for deciding a motion vector candidate having a minimum evaluation value.
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Inventors:
坂本 大輔
Application Number:
JP2010250258A
Publication Date:
December 10, 2014
Filing Date:
November 08, 2010
Export Citation:
Assignee:
キヤノン株式会社
International Classes:
H04N19/105; H04N19/50; H04N19/136; H04N19/137; H04N19/147; H04N19/176; H04N19/196; H04N19/503; H04N19/51; H04N19/567; H04N19/593; H04N19/61; H04N19/625; H04N19/82; H04N19/91
Attorney, Agent or Firm:
Yasunari Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Hideji Kimura
Shimoyama 治
Yukimitsu Nagagawa
Shiro Takayanagi
Yasuhiro Otsuka
Hideji Kimura
Shimoyama 治
Yukimitsu Nagagawa