发明名称 |
POSITION CODING FOR CONTEXT-BASED ADAPTIVE VARIABLE LENGTH CODING |
摘要 |
Particular embodiments include a method, an apparatus, and logic embodied in tangible computer-readable medium that when executed carries out a method of encoding an ordered sequence of quantized transform coefficients of a block of image data. One embodiment is a context adaptive variable length coding method that includes position coding the positions of zero-valued and non-zero valued coefficients by either a mixed method that encodes either the run length of zeroes preceding a non-zero coefficient or the run length of nonzero-valued coefficients preceding a zero-valued coefficients. Another includes position coding that uses a variable length code for two parameters respectively indicating the number of zero-valued coefficient positions and nonzero-valued coefficient positions still to be coded.
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申请公布号 |
US2009016440(A1) |
申请公布日期 |
2009.01.15 |
申请号 |
US20070774745 |
申请日期 |
2007.07.09 |
申请人 |
TIAN DIHONG;CHEN WEN-HSIUNG;CHANG PI SHENG |
发明人 |
TIAN DIHONG;CHEN WEN-HSIUNG;CHANG PI SHENG |
分类号 |
H04N7/12 |
主分类号 |
H04N7/12 |
代理机构 |
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地址 |
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