Quality/energy tradeoff approach for IDCT computation in MPEG-2 video decoding

Russell Henning, Chaitali Chakrabarti

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

10 Citations (Scopus)

Abstract

It would be desirable, in terms of energy conservation, to use a low complexity approximate algorithm to do all IDCT computation in an MPEG-2 decoder. However, there is a significant quality penalty associated with this approach that may not always be acceptable. A practical algorithmic method is presented here for achieving quality/energy tradeoff for a hardware 2-D IDCT in an MPEG-2 decoder. By allowing multiple algorithms to run on the same IDCT hardware, multiple quality/energy tradeoff modes can be supported, and the quality that results when an approximate algorithm is used can be increased. For example, by simply using an approximate algorithm for all B frame IDCT processing, while using a conventional algorithm for I and P frames, it will be shown that 23% energy reduction can be achieved compared to using the conventional algorithm exclusively. This significant energy reduction can be achieved with a quality tradeoff of less than 0.5 dB average PSNR.

Original languageEnglish (US)
Title of host publicationIEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
PublisherIEEE
Pages90-99
Number of pages10
StatePublished - 2000
Event2000 IEEE Workshop on Signal Processing Systems (SIPS 2000) - Lafayette, LA, USA
Duration: Oct 11 2000Oct 13 2000

Other

Other2000 IEEE Workshop on Signal Processing Systems (SIPS 2000)
CityLafayette, LA, USA
Period10/11/0010/13/00

Fingerprint

Decoding
Hardware
Energy conservation
Processing

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Henning, R., & Chakrabarti, C. (2000). Quality/energy tradeoff approach for IDCT computation in MPEG-2 video decoding. In IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation (pp. 90-99). IEEE.

Quality/energy tradeoff approach for IDCT computation in MPEG-2 video decoding. / Henning, Russell; Chakrabarti, Chaitali.

IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation. IEEE, 2000. p. 90-99.

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

Henning, R & Chakrabarti, C 2000, Quality/energy tradeoff approach for IDCT computation in MPEG-2 video decoding. in IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation. IEEE, pp. 90-99, 2000 IEEE Workshop on Signal Processing Systems (SIPS 2000), Lafayette, LA, USA, 10/11/00.
Henning R, Chakrabarti C. Quality/energy tradeoff approach for IDCT computation in MPEG-2 video decoding. In IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation. IEEE. 2000. p. 90-99
Henning, Russell ; Chakrabarti, Chaitali. / Quality/energy tradeoff approach for IDCT computation in MPEG-2 video decoding. IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation. IEEE, 2000. pp. 90-99
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