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.
|Title of host publication||Proceedings -Design, Automation and Test in Europe, DATE|
|Publication status||Published - 2006 Dec 1|
|Event||Design, Automation and Test in Europe, DATE'06 - Munich, Germany|
Duration: 2006 Mar 6 → 2006 Mar 10
|Other||Design, Automation and Test in Europe, DATE'06|
|Period||06/3/6 → 06/3/10|
ASJC Scopus subject areas