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《Journal of The Pla Institute of Surveying and Mapping》 2001-04
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New Approaches for the Automatic Selection of the Optimal Threshold in Image Binarization

WU Bing,QIN Zhi yuan (Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China)  
The selection of image binarization threshold is one of the critical technologies of the pretreatment of digital image. This paper proposes edge detection threshold methods of automatically selecting image binarization threshold after analyzing the principle of binarization operation and current technologies in detail. The result of experiments shows that using the threshold which is obtained from two methods to operate image binarization not only solves effectively image processing question of image gray's changing with object feature's changing but also can obtain ideal result of solving images getting from the same signal source.
【CateGory Index】: TP391.41
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