Title:
IMAGE PROCESSING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2011/125866
Kind Code:
A1
Abstract:
Disclosed are an image processing device and method that are able minimize image quality degradation of an entire screen, and are able to effect an improvement with regards to local image quality degradation. For each macroblock, an adaptive loop filter (111) classifies decoded images from a deblocking filter (21) into classes corresponding to intra prediction mode information from a prediction mode buffer (112). For each classified class, the adaptive loop filter (111) performs filter coefficient calculation in a manner so as to minimize the residual between a source image from a screen rearrangement buffer (12) and an image from the deblocking filter (21). For each classified class, the adaptive loop filter (111) performs filter processing using the calculated filter coefficient, and outputs the image after filter processing to a frame memory (22). The present disclosures can, for example, be applied in an image encoding device that encodes with the H.264/AVC method as a base.
Inventors:
SATO KAZUSHI (JP)
Application Number:
PCT/JP2011/058275
Publication Date:
October 13, 2011
Filing Date:
March 31, 2011
Export Citation:
Assignee:
SONY CORP (JP)
SATO KAZUSHI (JP)
SATO KAZUSHI (JP)
International Classes:
H04N19/50; H04N19/117; H04N19/136; H04N19/159; H04N19/176; H04N19/189; H04N19/19; H04N19/196; H04N19/46; H04N19/503; H04N19/51; H04N19/593; H04N19/60; H04N19/61; H04N19/625; H04N19/70; H04N19/82; H04N19/86; H04N19/91
Domestic Patent References:
| WO2009110559A1 | 2009-09-11 | |||
| WO2010026770A1 | 2010-03-11 | |||
| WO2008084745A1 | 2008-07-17 | |||
| WO2008075247A1 | 2008-06-26 |
Foreign References:
| JP2009164915A | 2009-07-23 |
Attorney, Agent or Firm:
INAMOTO Yoshio et al. (JP)
Yoshio Inemoto (JP)
Yoshio Inemoto (JP)
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Claims: