发明名称 |
Motion estimation method and apparatus thereof |
摘要 |
A motion estimation method, applied to an image frame having a time constraint, includes calculating an available time for estimating a motion vector of a block unit of the image frame; and selectively performing at least one stage of a plurality of motion estimation stages according to the available time to estimate the motion vector of the block unit. |
申请公布号 |
US8750381(B2) |
申请公布日期 |
2014.06.10 |
申请号 |
US20100825441 |
申请日期 |
2010.06.29 |
申请人 |
MStar Semiconductor, Inc. |
发明人 |
Wu Shun-Chen;Tu Ying-Chieh |
分类号 |
H04N19/00 |
主分类号 |
H04N19/00 |
代理机构 |
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代理人 |
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主权项 |
1. A motion estimation method, comprising:
calculating an available time, wherein the available time is regarded as a maximum time for estimating a motion vector of a block unit of an image frame; accumulating a working time for estimating the motion vector of the block unit of the image frame; and selectively performing at least one stage of a plurality of motion estimation stages according to the available time, wherein the motion estimation stages comprise a first motion estimation stage and a second motion estimation stage; determining at completion of the first motion estimation stage whether to selectively perform the second motion estimation stage by comparing the accumulated working time with the available time;
wherein when a difference between the accumulated working time and the available time is smaller than a predetermined value, utilizing a first motion vector generated via the first motion estimation stage as a final motion vector of the block unit without continuing to perform the second motion estimation stage; andwherein when the difference between the accumulated working time and the available time is not smaller than the predetermined value, continuing to perform the second motion estimation stage;wherein the predetermined value is defined as an average working time of the second motion estimation stage plus a buffer period.
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地址 |
Hsinchu Hsien TW |