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《Sensor World》 2011-12
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A modified Otsu segmentation algorithm based on preprocessing by Top-hat transformation

ZHANG Jun-sheng1,2; HOU Hui-lin2; ZHAO Xiao-xia2 1. Department of Electronic Engineering, Taiyuan Institute of Technology, Taiyuan 030008 China; 2. Key Laboratory of Instrumentation Sciences and Dynamic Testing, North University of China, Taiyuan 030051, China  
Otsu segmentation algorithm is used for image threshold segmentation widely, but it can’t segment images with low or variable contrast exactly. By the help of concept of Top-hat transformation in mathematical morphology, a modified Otsu method is proposed, by which the original images are processed with Top-hat transformation firstly and then segmented by Otsu method. The results of simulation experiments show that the method has advantages of low algorithmic complexity , easy realization, and can segment the special images which Otsu can’s deal with effectively. It has more perfect robustness than Otsu
【Fund】: 山西省青年科技研究基金资助项目(项目编号:2009021019-2)
【CateGory Index】: TP391.41
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