发明名称 |
Adaptive quantization based on bit rate prediction and prediction error energy |
摘要 |
<p>A method for adaptive quantization of video frames based on bit rate prediction that includes increasing quantization (12) in sectors of a video frame where coding artifacts would be less noticeable to the human visual system and decreasing quantization (14) in sectors where coding artifacts would be more noticeable to the human visual system. In one embodiment the method reverts to uniform quantization (18) for video frames in which adaptive quantization would require extra bits. <IMAGE></p> |
申请公布号 |
EP1250012(B1) |
申请公布日期 |
2009.01.21 |
申请号 |
EP20020252006 |
申请日期 |
2002.03.20 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
CORBERA, JORDI RIBAS |
分类号 |
H04N7/50;H03M7/30;H04N7/26 |
主分类号 |
H04N7/50 |
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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