Backward predictive block matching algorithm for low bit rate video coding

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Backward predictive block matching algorithm for low bit rate video coding

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© The Institution of Electrical Engineers
Published

In contrast to the conventional block matching algorithm (BMA) in video coding, a backward predictive BMA which does not need the transmission of the motion vector is investigated. The motion vector is estimated using the previously estimated motion vectors and reconstructed pixels adjacent to a block to be coded. For application to low bit rate video coding, backward/forward adaptive BMA is devised. At 59kbit/s the proposed scheme provides 0.2–0.5dB improvement in peak signal to noise ratio (PSNR) over the conventional BMA.

Inspec keywords: data compression; bandwidth compression; videotelephony; encoding; video signals

Other keywords: backward/forward adaptive BMA; 59 kbit/s; motion compensation prediction; backward predictive block matching algorithm; low bit rate video coding; peak signal to noise ratio; PSNR

Subjects: Television and video equipment, systems and applications; Codes; Signal processing and detection

References

    1. 1)
      • CCITT SGXV WP XV/1, SPECIALISTS GROUP ON CODING FOR VISUAL TELEPHONY: ‘Description of reference model 7 (RM7)’. CCITT SGXV document No. 446, 1989, p. 31.
    2. 2)
      • J.R. Jain , A.K. Jain . Displacement measurement and its application in interframe image coding. IEEE Trans. , 1799 - 1808
    3. 3)
      • H.M. Musmann , P. Pirsch , H.J. Gravoert . Advances in picture coding. Proc. IEEE , 523 - 548
    4. 4)
      • Draft revision of recommendation H.261: Video codec for audiovisual services at p × 64kbit/s. Sig. Process. Image Commun. , 221 - 239
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