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    Efficient Cost Measures for Motion Compensation at Low Bit Rates

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    HLV97.cost_measures.pdf (612.0Kb)
    Issue Date
    1996
    Author
    Hoang, Dzung T.
    Long, Philip M.
    Vitter, Jeffrey Scott
    Publisher
    IEEE
    Type
    Article
    Article Version
    Scholarly/refereed, author accepted manuscript
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    Abstract
    We present and compare methods for choosing motion vectors for block-based motion-compensated video coding. The primary focus is on videophone and video- conferencing applications, where low bit rates are neces- sary, where motion is usually limited, and where the amount of computation is also limited. In a typical block-based motion-compensated video coding system, motion vectors are transmitted along with a lossy encoding of the resid- uals. As the bit rate decreases, the proportion required to transmit the motion vectors increases. We provide ex- perimental evidence that choosing motion vectors explic- itly to minimize rate (including motion vector coding), sub- ject to implicit constraints on distortion, yields better rate- distortion tradeo s than minimizing some measure of pre- diction error. Minimizing a combination of rate and distor- tion yields further improvements. Although these explicit- minimization schemes are computationally intensive, they provide invaluable insight which we use to develop practi- cal algorithms. We show that minimizing a simple heuristic function of the prediction error and the motion vector code- length results in rate-distortion performance comparable to explicit-minimization schemes while being computationally feasible. Experimental results are provided for coders that operate within the H.261 standard.
    Description
    (c) 1996 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
    URI
    http://hdl.handle.net/1808/7218
    DOI
    https://doi.org/10.1109/DCC.1996.488315
    Collections
    • Provost Office Published Articles [95]
    • Electrical Engineering and Computer Science Scholarly Works [288]
    • Distinguished Professors Scholarly Works [918]
    Citation
    D. T. Hoang, P. M. Long, and J. S. Vitter. “Efficient Cost Measures for Motion Compensation at Low Bit Rates,” Proceedings of the 1996 IEEE Data Compression Conference (DCC ’96), Snowbird, UT, April 1996. http://dx.doi.org/10.1109/DCC.1996.488315

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    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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