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Title:
IMAGE PROCESSOR, AND METHOD THEREOF
Document Type and Number:
Japanese Patent JP2008283481
Kind Code:
A
Abstract:

To reduce an operation amount required to determine a predictive mode of an in-frame predictive coding.

When encoding a frame of a moving image in a block unit, predictive image generating parts 201 to 209 generate a plurality of predictive images respectively corresponding to a plurality of predictive modes in the case of performing in-frame predictive coding of a block of an encoding object. Pixel selecting parts 211 to 219 acquire the value of a pixel of a position corresponding to each predictive mode from the block of the encoding object and a plurality of predictive images. SAD (sum of absolute difference) calculating parts 221 to 229 calculate an evaluation value showing a difference between pixel values. A predictive mode determining part 210 sets a predictive mode of the block of the encoding object on the basis of evaluation values respectively corresponding to the plurality of predictive modes.


Inventors:
ITOKAWA OSAMU
Application Number:
JP2007125956A
Publication Date:
November 20, 2008
Filing Date:
May 10, 2007
Export Citation:
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Assignee:
CANON KK
International Classes:
H04N19/50; H04N19/11; H04N19/127; H04N19/134; H04N19/136; H04N19/146; H04N19/196; H04N19/423; H04N19/503; H04N19/51; H04N19/513; H04N19/577; H04N19/593; H04N19/61; H04N19/625; H04N19/80; H04N19/91
Domestic Patent References:
JP2007104117A2007-04-19
JP2004304724A2004-10-28
JP2005160048A2005-06-16
JP2006246431A2006-09-14
JP2008048065A2008-02-28
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu



 
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