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30 October 2009 Fast background image update in multi-touch system
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Proceedings Volume 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis; 749529 (2009)
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China
Background subtraction technique has been widely used in the single camera based multi-touch system. The solution based on fixed-rate background accumulation can only be used to the applications with gradual change of ambient lightings. This paper presents a solution to update background by detecting ambient lightings, which enables the multi-touch system to be operated under the conditions of rapid or complicated change of ambient lightings. Experimental results show that with the help of the presented solutions, the ghost points are efficiently reduced and the system can adapt to the changes of ambient lighting in 1 second.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Tao Yang, Xiang Li, Yongtian Wang, and Yue Liu "Fast background image update in multi-touch system", Proc. SPIE 7495, MIPPR 2009: Automatic Target Recognition and Image Analysis, 749529 (30 October 2009);

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