Dynamic bit-width adaptation in DCT: Image quality versus computation energy trade-off

Jongsun Park, Hwan Choi Jung, Kaushik Roy

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

7 Citations (Scopus)

Abstract

We present a dynamic bit-width adaptation scheme in DCT applications for efficient trade-off between image quality and computation energy. Based on sensitivity differences of 64 DCT coefficients, various operand bit-widths are used for different frequency components to reduce computation energy in DCT operation. Numerical results show that our DCT architecture can achieve power savings ranging from 36 % to 75% compared to normal operation.

Original languageEnglish
Title of host publicationProceedings -Design, Automation and Test in Europe, DATE
Volume1
Publication statusPublished - 2006 Dec 1
Externally publishedYes
EventDesign, Automation and Test in Europe, DATE'06 - Munich, Germany
Duration: 2006 Mar 62006 Mar 10

Other

OtherDesign, Automation and Test in Europe, DATE'06
CountryGermany
CityMunich
Period06/3/606/3/10

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Park, J., Jung, H. C., & Roy, K. (2006). Dynamic bit-width adaptation in DCT: Image quality versus computation energy trade-off. In Proceedings -Design, Automation and Test in Europe, DATE (Vol. 1). [1656936]