发明授权
- 专利标题: Per multi-block partition breakpoint determining for hybrid variable length coding
- 专利标题(中): 每个多块分区断点确定混合变长编码
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申请号: US11686860申请日: 2007-03-15
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公开(公告)号: US08126062B2公开(公告)日: 2012-02-28
- 发明人: Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang , John A. Toebes
- 申请人: Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang , John A. Toebes
- 申请人地址: US CA San Jose
- 专利权人: Cisco Technology, Inc.
- 当前专利权人: Cisco Technology, Inc.
- 当前专利权人地址: US CA San Jose
- 代理机构: Inventek
- 代理商 Dov Rosenfeld
- 主分类号: H04N7/12
- IPC分类号: H04N7/12
摘要:
A method, and apparatus, and logic encoded in one or more computer-readable tangible medium to carry out a method. The method is to code a plurality of ordered sequences of quantized transform coefficients of a corresponding plurality of blocks of image data using a hybrid coding method that includes determining a breakpoint location in the sequence between a low frequency region and a high frequency region; coding the low-frequency region using a selected low-frequency variable length coding method; coding the high-frequency region using a selected high-frequency variable length coding method; and coding the location of the breakpoint. The plurality of blocks include adjacent blocks and form a multi-block partition. The breakpoint location is determined as a function of the sequences of the multi-block partition such that different multi-block partitions can have different breakpoints.
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