Boundary-Active-Only Adaptive Power-Reduction Scheme for Region-Growing Video-Segmentation

Takashi MORIMOTO  Hidekazu ADACHI  Osamu KIRIYAMA  Tetsushi KOIDE  Hans Jurgen MATTAUSCH  

IEICE TRANSACTIONS on Information and Systems   Vol.E89-D   No.3   pp.1299-1302
Publication Date: 2006/03/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e89-d.3.1299
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Image Processing and Video Processing
image segmentation,  real-time image processing,  parallel processing,  LSI implementation,  

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This letter presents a boundary-active-only (BAO) power reduction technique for cell-network-based region-growing video segmentation. The key approach is an adaptive situation-dependent power switching of each network cell, namely only cells at the boundary of currently grown regions are activated, and all the other cells are kept in low-power stand-by mode. The effectiveness of the proposed technique is experimentally confirmed with CMOS test-chips having small-scale cell networks of up to 4133 cells, where an average of only 1.7% of the cells remains active after application of the proposed approach. About 85% power reduction is thus achievable without sacrificing real-time processing.