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Three-dimensional subband coding of video.

C I Podilchuk1, N S Jayant, N Farvardin

  • 1Signal Process. Res. Dept., AT&T Bell Labs., Murray Hill, NJ.

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|January 1, 1995
PubMed
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This study introduces 3-D spatio-temporal subband decomposition for video coding, achieving competitive results at various bitrates using adaptive differential pulse code modulation (ADPCM) and novel vector quantization methods.

Area of Science:

  • Digital signal processing
  • Video compression technologies
  • Information theory

Background:

  • Traditional video coding methods face limitations in efficiency and quality.
  • Spatio-temporal subband decomposition offers a promising framework for advanced video compression.

Purpose of the Study:

  • To present a novel video coding scheme utilizing three-dimensional (3-D) spatio-temporal subband decomposition.
  • To evaluate the performance of this framework at different bitrates (1 Mbps, 384 kbps, 128 kbps).

Main Methods:

  • Implementation of a 1-Mbps coder using adaptive differential pulse code modulation (ADPCM) and adaptive bit allocation.
  • Development of a 384-kbps coder employing ADPCM for low-frequency bands and geometric vector quantization (GVQ) for high-frequency bands.

Related Experiment Videos

  • Design of a 128-kbps coder utilizing an unbalanced tree-structured vector quantizer (UTSVQ) for low-frequency bands and GVQ for high-frequency bands.

    • Main Results:

    • The 1-Mbps coder is suitable for video storage on CD-ROM.
    • GVQ effectively exploits the structure in higher frequency bands.
    • The proposed coding schemes demonstrate competitive performance compared to traditional video coding techniques.

    Conclusions:

    • The 3-D spatio-temporal subband decomposition framework is a viable approach for video coding.
    • The developed coding schemes offer efficient compression at various bitrates.
    • Further investigation into this framework for diverse coding schemes and applications is warranted.