Title:
復号装置、符号化装置、復号方法および符号化方法
Document Type and Number:
Japanese Patent JP6916939
Kind Code:
B2
Abstract:
An adaptive filter (42) includes: an edge direction detection section (422) which discriminates directionality of an input image in each of a plurality of unit regions constituting the input image; a region classification section (424) which classifies the each of the plurality of unit regions into one of a plurality of unit region groups in accordance with to which of a plurality of predetermined groups the directionality of the input image in the each of the plurality of unit regions belongs, the directionality having been discriminated by the edge direction detection section (422); and a filter process section (425) which calculates a pixel value of the each pixel of an output image by use of a filter coefficient group optimized for a unit region group to which a unit region including the each pixel belongs.
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Inventors:
Tomohiro Inokai
Tomoyuki Yamamoto
Takanori Yamazaki
Tomoyuki Yamamoto
Takanori Yamazaki
Application Number:
JP2020145337A
Publication Date:
August 11, 2021
Filing Date:
August 31, 2020
Export Citation:
Assignee:
Sharp Corporation
International Classes:
H04N19/14; H04N19/117; H04N19/176; H04N19/70; H04N19/82
Domestic Patent References:
| JP2011223338A | ||||
| JP2009095004A | ||||
| JP2006157267A | ||||
| JP2006148878A |
Foreign References:
| WO2010083438A2 | ||||
| WO2010047104A1 | ||||
| WO2010026770A1 | ||||
| WO2009110559A1 | ||||
| WO2009133844A1 |
Other References:
Marta Karczewicz et al.,Video coding technology proposal by Qualcomm Inc.,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,JCTVC-A121,1st Meeting: Dresden, DE,2010年04月,pp.1,12
Tomohiro Ikai and Yukinobu Yasugi,Region-based adaptive loop filter using two-dimensional feature,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,JCTVC-D116,4th Meeting: Daegu, KR,2011年01月,pp.1-12
Tomohiro Ikai and Yukinobu Yasugi,Region-based adaptive loop filter using two-dimensional feature,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,JCTVC-D116,4th Meeting: Daegu, KR,2011年01月,pp.1-12
Attorney, Agent or Firm:
Hiroyuki Katata