An approach for enabling DCT/IDCT energy reduction scalability in MPEG-2 video codecs

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

It would be desirable, in terms of energy conservation, to use a low complexity approximate algorithm to do all DCT and IDCT computation in an MPEG-2 video codec. However, there is a significant quality penalty associated with this approach that may not always be acceptable. A practical algorithmic method is studied here for achieving scalable energy reduction during DCT and IDCT computation in MPEG-2 video codecs at the expense of reasonable amounts of quality. For example, by applying exact and approximate DCT/IDCT algorithms appropriately, the energy consumption of DCT and IDCT execution in two video codecs communicating with one another can be reduced by 8% for quality reduction of 0.4 dB average PSNR, 14% for 0.8 dB reduction, or 22% for 1.4 dB reduction.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Pages1209-1212
Number of pages4
Volume2
StatePublished - 2001
Event2001 IEEE Interntional Conference on Acoustics, Speech, and Signal Processing - Salt Lake, UT, United States
Duration: May 7 2001May 11 2001

Other

Other2001 IEEE Interntional Conference on Acoustics, Speech, and Signal Processing
CountryUnited States
CitySalt Lake, UT
Period5/7/015/11/01

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics

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  • Cite this

    Henning, R., & Chakrabarti, C. (2001). An approach for enabling DCT/IDCT energy reduction scalability in MPEG-2 video codecs. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (Vol. 2, pp. 1209-1212)