Invention Grant
US08761240B2 Methods and devices for data compression using context-based coding order
失效
使用基于上下文的编码顺序进行数据压缩的方法和设备
- Patent Title: Methods and devices for data compression using context-based coding order
- Patent Title (中): 使用基于上下文的编码顺序进行数据压缩的方法和设备
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Application No.: US13181576Application Date: 2011-07-13
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Publication No.: US08761240B2Publication Date: 2014-06-24
- Inventor: Gaelle Christine Martin-Cocher , Dake He , Gergely Ferenc Korodi
- Applicant: Gaelle Christine Martin-Cocher , Dake He , Gergely Ferenc Korodi
- Applicant Address: CA Waterloo, Ontario
- Assignee: Blackberry Limited
- Current Assignee: Blackberry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Rowand LLP
- Main IPC: H04N7/12
- IPC: H04N7/12 ; H04N11/02 ; H04N11/04
Abstract:
A method is presented for entropy coding data using an entropy coder to encode an input sequence. A context model is used to determine the context of each symbol and a probability estimation is made for each symbol. A method is presented for revising the coding order to be context-based, grouping symbols consecutively on the basis that they have a common context. A method is presented for entropy decoding a bitstream of encoded data encoded using a context-based coding order.
Public/Granted literature
- US20120014457A1 METHODS AND DEVICES FOR DATA COMPRESSION USING CONTEXT-BASED CODING ORDER Public/Granted day:2012-01-19
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