发明授权
US07876833B2 Method and apparatus for adaptive up-scaling for spatially scalable coding
有权
用于空间可缩放编码的自适应上调的方法和装置
- 专利标题: Method and apparatus for adaptive up-scaling for spatially scalable coding
- 专利标题(中): 用于空间可缩放编码的自适应上调的方法和装置
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申请号: US11139963申请日: 2005-05-26
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公开(公告)号: US07876833B2公开(公告)日: 2011-01-25
- 发明人: Christopher Andrew Segall , Shaw-min Lei
- 申请人: Christopher Andrew Segall , Shaw-min Lei
- 申请人地址: US WA Camas
- 专利权人: Sharp Laboratories of America, Inc.
- 当前专利权人: Sharp Laboratories of America, Inc.
- 当前专利权人地址: US WA Camas
- 代理机构: Stolowitz Ford Cowger LLP
- 主分类号: H04B1/66
- IPC分类号: H04B1/66
摘要:
Adaptive up-sample filtering is used to improve compression efficiency of spatially scalable coding systems by more effectively predicting the high-resolution (enhanced-layer) video (or image) from the low-resolution lower-layer video (or image). Different up-sample filters adaptive to local image properties are selectively used for different portions of a low resolution frame to generate a better up-sampled image. Selection between different up-sample filters is determined by a variety of different information available to both the encoder and decoder. In one embodiment, the up-sample filters are selected by the encoder and then explicitly identified to the decoder. Other techniques are then used to minimize the cost of transmitting the up-sample filter identifiers. In alternative embodiments, the encoder and decoder independently make up-sample filters selections.
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