发明名称 |
SELECTION OF MOTION VECTOR PRECISION. |
摘要 |
Approaches to selection of motion vector ("MV") precision during video encoding are presented. These approaches can facilitate compression that is effective in terms of rate-distortion performance and/or computational efficiency. For example, a video encoder determines an MV precision for a unit of video from among multiple MV precisions, which include one or more fractional-sample MV precisions and integer-sample MV precision. The video encoder can identify a set of MV values having a fractional-sample MV precision, then select the MV precision for the unit based at least in part on prevalence of MV values (within the set) having a fractional part of zero. Or, the video encoder can perform rate-distortion analysis, where the rate-distortion analysis is biased towards the integer-sample MV precision. Or, the video encoder can collect information about the video and select the MV precision for the unit based at least in part on the collected information. |
申请公布号 |
MX2016009025(A) |
申请公布日期 |
2016.09.28 |
申请号 |
MX20160009025 |
申请日期 |
2014.12.19 |
申请人 |
MICROSOFT TECHNOLOGY LICENSING, LLC |
发明人 |
Gary J. SULLIVAN;Chih-Lung LIN;You ZHOU;Ming- Chieh LEE |
分类号 |
H04N19/109;H04N19/136;H04N19/139;H04N19/147;H04N19/17;H04N19/177;H04N19/179 |
主分类号 |
H04N19/109 |
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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