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Title:
CODING DEVICE, CODING METHOD, DECODING DEVICE, AND DECODING METHOD
Document Type and Number:
WIPO Patent Application WO/2018/168484
Kind Code:
A1
Abstract:
The present technique relates to a coding device, a coding method, a decoding device, and a decoding method with which the S/N of an image can be greatly improved. A class classification unit performs class classification for classifying a pixel of interest of a first image, obtained by adding together a predictive coding residual and a predicted image, into any of a plurality of classes. A filtering unit subjects the first image to filtering corresponding to the class of the pixel of interest, and generates a second image for use in predicting a predicted image. The class classification is performed using previous-stage filter-related information relating to previous-stage filtering which is performed prior to the filtering by the filtering unit. The present technique may be applied, for example, in an image coding device or decoding device.

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Inventors:
KAWAI TAKURO (JP)
HOSOKAWA KENICHIRO (JP)
NAKAGAMI OHJI (JP)
IKEDA MASARU (JP)
Application Number:
PCT/JP2018/007704
Publication Date:
September 20, 2018
Filing Date:
March 01, 2018
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Assignee:
SONY CORP (JP)
International Classes:
H04N19/117; H04N19/14; H04N19/157; H04N19/46; H04N19/82
Domestic Patent References:
WO2013154026A12013-10-17
WO2013073184A12013-05-23
Foreign References:
JP2013201467A2013-10-03
JP2017005723A2017-01-05
Other References:
ANDREW, SEGALL: "Unified Deblocking and SAO", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) 7TH MEETING : GENEVA, JCTVC-G608-V3, 24 November 2011 (2011-11-24)
CHEN, JIANLE ET AL.: "Algorithm Description of Joint Exploration Test Model 5 (JEM 5", JOINT VIDEO EXPLORATION TEAM (JVET) 5TH MEETING : GENEVA, JVET-E1001-V2, 11 February 2017 (2017-02-11)
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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