Block-classified bidirectional motion compensation scheme for wavelet-decomposed digital video

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In this paper the authors introduce a block-classified bidirectional motion compensation scheme for the previously developed wavelet-based video codec, where multiresolution motion estimation is performed in the wavelet domain. The frame classification structure described in this paper is similar to that used in the MPEG standard. Specifically, the I-frames are intraframe coded, the P-frames are interpolated from a previous I- or a P-frame, and the B-frames are bidirectional interpolated frames. They apply this frame classification structure to the wavelet domain with variable block sizes and multiresolution representation. They use a symmetric bidirectional scheme for the B-frames and classify the motion ... continued below

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34 p.

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Zafar, S.; Zhang, Y.Q. & Jabbari, B. August 1, 1997.

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  • Zafar, S. Argonne National Lab., IL (United States). Mathematics and Computer Science Div.
  • Zhang, Y.Q. David Sarnoff Research Center, Princeton, NJ (United States)
  • Jabbari, B. George Mason Univ., Fairfax, VA (United States)

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Description

In this paper the authors introduce a block-classified bidirectional motion compensation scheme for the previously developed wavelet-based video codec, where multiresolution motion estimation is performed in the wavelet domain. The frame classification structure described in this paper is similar to that used in the MPEG standard. Specifically, the I-frames are intraframe coded, the P-frames are interpolated from a previous I- or a P-frame, and the B-frames are bidirectional interpolated frames. They apply this frame classification structure to the wavelet domain with variable block sizes and multiresolution representation. They use a symmetric bidirectional scheme for the B-frames and classify the motion blocks as intraframe, compensated either from the preceding or the following frame, or bidirectional (i.e., compensated based on which type yields the minimum energy). They also introduce the concept of F-frames, which are analogous to P-frames but are predicted from the following frame only. This improves the overall quality of the reconstruction in a group of pictures (GOP) but at the expense of extra buffering. They also study the effect of quantization of the I-frames on the reconstruction of a GOP, and they provide intuitive explanation for the results. In addition, the authors study a variety of wavelet filter-banks to be used in a multiresolution motion-compensated hierarchical video codec.

Physical Description

34 p.

Notes

OSTI as DE97008121

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  • Other Information: PBD: [1997]

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  • Other: DE97008121
  • Report No.: ANL/MCS/PP--87730
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/510391 | External Link
  • Office of Scientific & Technical Information Report Number: 510391
  • Archival Resource Key: ark:/67531/metadc694449

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Creation Date

  • August 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 15, 2015, 11:58 a.m.

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Zafar, S.; Zhang, Y.Q. & Jabbari, B. Block-classified bidirectional motion compensation scheme for wavelet-decomposed digital video, report, August 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc694449/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.