Method and apparatus for improved in-loop filtering

Patent metadata

Field	Value
Publication number	US-9872015-B2
Application number	US-201213992472-A
Country	US
Kind code	B2
Filing date	Apr 20, 2012
Priority date	Apr 21, 2011
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

Video decoding and encoding with in-loop processing of reconstructed video are disclosed. At the decoder side, a flag is received from the video bitstream and according to the flag, information associated with in-loop filter parameters is received either from a data payload in the video bitstream to be shared by two or more coding blocks or individual coding block data in the video bitstream. At the encoder side, information associated with the in-loop filter parameters is incorporated either in a data payload in a video bitstream to be shared by two or more coding blocks or interleaved with individual coding block data in the video bitstream according to a flag. The data payload in the video bitstream is in a picture level, Adaptation Parameter Set (APS), or a slice header.

First claim

The invention claimed is:

1. A method for video coding with sample adaptive offset (SAO) processing of reconstructed video, the method comprising:
receiving reconstructed video data; and
applying the SAO processing to regions of the reconstructed video data, wherein each region is processed by an SAO type and offset values; and
encoding or decoding according to the SAO processed reconstructed video data;
wherein the SAO type comprises Band Offset (BO) and Edge Offset (EO) types, and
an SAO type index is used to indicate the SAO processing is one of four EO categories corresponding to 0°, 90°, 135°, and 45° is used.

2. The method of claim 1 , wherein a number of offset values in each region for the BO type and for the EO type is the same.

3. The method of claim 2 , wherein the number of offset values in each region for EO type and BO type is four.

Assignees

• Fu Chih-Ming
• Chen Ching-Yeh
• Tsai Chia-Yang
• Huang Yu-Wen
• Lei Shaw-Min
• Hfi Innovation Inc

Inventors

• Fu Chih-Ming
• Chen Ching-Yeh
• Tsai Chia-Yang
• Huang Yu-Wen
• Lei Shaw-Min

Classifications

• H04N19/117

  Filters, e.g. for pre-processing or post-processing (sub-band filter banks H04N19/635) · CPC title

• H04N19/82

  involving filtering within a prediction loop · CPC title

• H04N19/463

  by compressing encoding parameters before transmission · CPC title

• H04N19/70 Primary

  characterised by syntax aspects related to video coding, e.g. related to compression standards · CPC title

• H04N19/169 Primary

  characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding · CPC title