发明名称 |
MULTI-LEVEL REPRESENTATION OF REORDERED TRANSFORM COEFFICIENTS |
摘要 |
Techniques and tools for encoding and decoding a block of frequency coefficients are presented. An encoder selects a scan order from multiple available scan orders and then applies the selected scan order to a two-dimensional matrix of transform coefficients, grouping non-zero values of the frequency coefficients together in a one-dimensional string. The encoder entropy encodes the one-dimensional string of coefficient values according to a multi-level nested set representation. In decoding, a decoder entropy decodes the one-dimensional string of coefficient values from the multi-level nested set representation. The decoder selects the scan order from among multiple available scan orders and then reorders the coefficients back into a two-dimensional matrix using the selected scan order. |
申请公布号 |
EP2269380(A4) |
申请公布日期 |
2014.05.28 |
申请号 |
EP20090739377 |
申请日期 |
2009.04.01 |
申请人 |
MICROSOFT CORPORATION |
发明人 |
TU, CHENGJIE;REGUNATHAN, SHANKAR;SUN, SHIJUN;LIN, CHI-LUNG |
分类号 |
H04N19/13;H04N19/129;H04N19/136;H04N19/15;H04N19/152;H04N19/162;H04N19/172;H04N19/174;H04N19/176;H04N19/46;H04N19/91 |
主分类号 |
H04N19/13 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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