Reconfigurable SAD tree architecture based on adaptive sub-sampling in HDTV application

Yiqing Huang*, Qin Liu, Satoshi Goto, Takeshi Ikenaga

*Corresponding author for this work

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

2 Citations (Scopus)


In H.264/AVC based integer motion estimation engine, fixed architectures based on full pixel or direct sub-sampling pattern are widely used for HDTV application. However, these architectures suffer from either high complexity or quality loss problems. In this paper, an adaptive sub-sampling based reconfigurable architecture is given out. Firstly, by executing pixel difference analysis, the adaptive sub-sampling scheme which uses three hardware friendly patterns is applied on homogeneous macroblock (MB). Secondly, the related architecture introduces one more pipeline stage to build up configurable partial SAD values so that system performance is enhanced. Thirdly, a two-level pixel data organization scheme is proposed to solve data reuse and hardware utilization problems caused by adaptive algorithm. Moreover, one cross based SAD generation structure is introduced to achieve adaptive output results with less hardware cost. Experimental results show that, the proposed architecture can averagely save 61.71% clock cycles and accomplish twice or four times processing capability for homogeneous MBs. The maximum clock frequency is 208MHz under the TSMC 0.18μm technology in worst case conditions(1.62V, 125°C).

Original languageEnglish
Title of host publicationGLSVLSI 2009 - Proceedings of the 2009 Great Lakes Symposium on VLSI
Number of pages6
Publication statusPublished - 2009
Event19th ACM Great Lakes Symposium on VLSI, GLSVLSI '09 - Boston, MA, United States
Duration: 2009 May 102009 May 12

Publication series

NameProceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI


Conference19th ACM Great Lakes Symposium on VLSI, GLSVLSI '09
Country/TerritoryUnited States
CityBoston, MA


  • H.264
  • Reconfigurable Architecture
  • VLSI

ASJC Scopus subject areas

  • Engineering(all)


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