Invention Grant
- Patent Title: Deblocking filtering
- Patent Title (中): 解块过滤
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Application No.: US13583437Application Date: 2011-10-06
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Publication No.: US08526509B2Publication Date: 2013-09-03
- Inventor: Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
- Applicant: Andrey Norkin , Kenneth Andersson , Rickard Sjöberg
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Rothwell, Figg, Ernst & Manbeck, P.C.
- International Application: PCT/SE2011/051199 WO 20111006
- International Announcement: WO2012/096610 WO 20120719
- Main IPC: H04N7/12
- IPC: H04N7/12
Abstract:
Blocking artifacts at a block boundary (1) between a block (10) and a neighboring block (20) in a video frame are reduced by calculating an offset based on pixel values of pixels (11, 13) in a line (12) of pixels (11, 13, 15, 17) in the block (10) and based on pixel values of pixels (21, 23) in a corresponding line (22) of pixels (21, 23, 25, 27) in the neighboring block (20). The offset is added to the pixel value of the pixel (11) closest to the block boundary (1) in the line (12) of pixels (11, 13, 15, 17) and is subtracted from the pixel value of the pixel (21) closest to the block boundary (1) in the corresponding line (22) of pixels (21, 23, 25, 27). The resulting deblocking filter has good low-pass characteristics and is efficient for reducing blocking artifact.
Public/Granted literature
- US20130003865A1 DEBLOCKING FILTERING Public/Granted day:2013-01-03
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