| Motion estimation methods for overlapped block motion compensation. | |
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MedLine Citation:
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PMID: 18262989 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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An extension of conventional block motion compensation (BMC), overlapped block motion compensation (OBMC) has been shown to reduce residual errors and blocking effects in motion-compensated video. However, the overlap creates a noncausal spatial dependence between blocks and complicates motion estimation (ME) for OBMC. Iterative methods have traditionally been employed for overlapped block motion estimation (OBME). For compression, the rate for the motion vector field (MVF) may also be constrained. This work considers several rate-constrained OBME algorithms, both iterative and noniterative. Experiments demonstrate that a simple raster-scan algorithm is effective as a suboptimal, noniterative solution, with comparable or better rate-distortion performance and computational complexity than iterative OBME algorithms. Depending on the application, either this method or a simple block-matching algorithm plus iteration are the most attractive of the tested OBME schemes. |
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Authors:
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J K Su; R M Mersereau |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: IEEE transactions on image processing : a publication of the IEEE Signal Processing Society Volume: 9 ISSN: 1057-7149 ISO Abbreviation: IEEE Trans Image Process Publication Date: 2000 |
Date Detail:
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Created Date: 2008-02-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9886191 Medline TA: IEEE Trans Image Process Country: United States |
Other Details:
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Languages: eng Pagination: 1509-21 Citation Subset: - |
Affiliation:
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Sch. of Electr. and Comput. Eng., Georgia Inst. of Technol., Atlanta, GA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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