Threshold is the main principle to differentiate pixels of an image. A new method of adaptive threshold selection is proposed which combines the edge feature that is the important information of the images based on the theory of mathematical morphology. Experiments show that this new algorithm keeps the original edge features good and gets good results.
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赵永志 彭国华. 一种有效的图像二值化方法[J]. 科学技术与工程, 2007, (1): 139-141144. ZHAO Yong-zhi, PENG Guo-hua. An Efficient Approach to Image Binarization[J]. Science Technology and Engineering,2007,(1):139-141144.