发明申请
US20080025394A1 Method Of Encoding And Decoding An Image Sequence By Means Of Hierarchical Temporal Analysis
有权
通过分层时间分析对图像序列进行编码和解码的方法
- 专利标题: Method Of Encoding And Decoding An Image Sequence By Means Of Hierarchical Temporal Analysis
- 专利标题(中): 通过分层时间分析对图像序列进行编码和解码的方法
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申请号: US10590307申请日: 2005-02-21
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公开(公告)号: US20080025394A1公开(公告)日: 2008-01-31
- 发明人: Edouard Francois , Guillaume Boisson , Jerome Vieron , Philippe Robert , Gwenaelle Marquant
- 申请人: Edouard Francois , Guillaume Boisson , Jerome Vieron , Philippe Robert , Gwenaelle Marquant
- 申请人地址: FR F-92100 Boulogne-Billancourt
- 专利权人: Thomson Licensing
- 当前专利权人: Thomson Licensing
- 当前专利权人地址: FR F-92100 Boulogne-Billancourt
- 优先权: FR0450420 20040302
- 国际申请: PCT/FR05/50109 WO 20050221
- 主分类号: H04N7/26
- IPC分类号: H04N7/26
摘要:
The method realizes a motion compensated temporal filtering (MCTF), the temporal filtering being replaced by an intra mode coding to obtain at least one low (L) or high (H) frequency picture if the current picture has a level of correlation with a lower previous picture at a threshold, the low frequency pictures obtained (L) being thus scaled to be adapted, at the energy level, to the pictures obtained by motion compensated temporal filtering, and comprises, at the end of analysis:a selection of the pictures obtained by intra coding of a picture of a low decomposition level with the additional condition, for the high frequency pictures, that this picture is derived itself from an intra coding. a calibration of the picture selected by carrying out at least one reverse step of the scaling step. The applications relate to video compression with temporal prediction.
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