发明名称 |
Scalable MPEG-2 video decoder with selective motion compensation |
摘要 |
A decoder system having a motion compensation system that scales the processing of B pictures in order to save computational resources. The motion compensation system has a first scaling system that includes comparing a motion vector magnitude of each macroblock in a B picture with a predetermined threshold. A system for performing a routine decoding operation for each macroblock in which the motion vector magnitude is greater than the predetermined threshold and a system for copying a corresponding macroblock from a previous picture for each macroblock in which the motion vector magnitude is less than or equal to the predetermined threshold. A second scaling system that includes calculating an average motion vector magnitude for a first B picture and replacing a next contiguous B picture with the first B picture if the average motion vector magnitude is less than or equal to a predetermined threshold.
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申请公布号 |
US6680973(B2) |
申请公布日期 |
2004.01.20 |
申请号 |
US20010821140 |
申请日期 |
2001.03.29 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
PENG SHAOMIN;VAN DER SCHAAR MIHAELA |
分类号 |
H04N7/32;H03M7/36;H04N7/26;H04N7/36;H04N7/46;H04N7/50;(IPC1-7):H04N7/12 |
主分类号 |
H04N7/32 |
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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