Invention Grant
US08175145B2 Post-processing for reducing quantization noise of an encoder during decoding
有权
用于在解码期间减少编码器的量化噪声的后处理
- Patent Title: Post-processing for reducing quantization noise of an encoder during decoding
- Patent Title (中): 用于在解码期间减少编码器的量化噪声的后处理
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Application No.: US12663546Application Date: 2008-06-13
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Publication No.: US08175145B2Publication Date: 2012-05-08
- Inventor: Jean-Luc Garcia , Claude Marro , Balazs Kovesi
- Applicant: Jean-Luc Garcia , Claude Marro , Balazs Kovesi
- Applicant Address: FR Paris
- Assignee: France Telecom
- Current Assignee: France Telecom
- Current Assignee Address: FR Paris
- Agency: Drinker Biddle & Reath LLP
- Priority: FR0704242 20070614
- International Application: PCT/FR2008/051057 WO 20080613
- International Announcement: WO2009/004225 WO 20090108
- Main IPC: H04B1/66
- IPC: H04B1/66
Abstract:
The invention relates to the processing of a signal that is compression encoded (COD) according to a predetermined encoding type applying a quantification operation (Q) and then decoded (DEC) so that the quantification noise is present in the decoded signal (S*). The signal processing of the invention comprises applying a quantification noise reduction (TBQ) to the decoded signal (S), preferably in the following manner: first obtaining information (INF) on the type of compression encoding, selecting a model for the reduction of the quantification noise adapted to said information by estimating the quantification noise (BQ) that the encoding may have generated; and applying to the decoded signal (S*) a processing for reducing the quantification noise (FIL) according to the selected model.
Public/Granted literature
- US20100183067A1 POST-PROCESSING FOR REDUCING QUANTIZATION NOISE OF AN ENCODER DURING DECODING Public/Granted day:2010-07-22
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