Rapid sub-pixel motion estimation method based on prediction direction correction / statistic prejudgement
Title:
Rapid sub-pixel motion estimation method based on prediction direction correction / statistic prejudgement
Application Number:
200410000741
Application Date:
2002/07/12
Announcement Date:
2004/11/10
Pub. Date:
Publication Number:
1545321
Announcement Number:
1245031
Grant Date:
2006-3-8
Granted Pub. Date:
2006-3-8
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
H04N 7/32
Applicant(s):
Tsinghua University
Inventor(s):
He Yun, Chen Zhibo
Key Words:
Rapid, sub-pixel motion, estimation method, prediction direction correction / statistic prejud
Abstract:
The invention belongs to video coding field in signal processing, relating to a fast sub-pixel motion estimating method based on prediction direction correction/statistic prediction, mainly in sub-pixel motion estimations of 1/2, 1/4, 1/8, etc, using the result of the preceding stage search precision motion estimation as well as the statistic information at current precision to predict the current stage motion vector and introducing a search cut-off criterion. At the same time of keeping the coding rate distortion characteristics of existing techniques, it extremely reduces operating complexity of sub-pixel motion estimation in hardware and software. It is not limited to H.264 international standard, but able to expanded to other applications to international standard and non-international standard video coding.
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