A novel image thresholding method based on Parzen window estimate

Authors:
Shitong Wang;Fu-lai Chung;Fusong Xiong
Affiliations:
School of Information, Southern Yangtse University, WuXi, JiangSu, China and Department of Computing, Hong Kong Polytechnic University, Hong Kong, China;Department of Computing, Hong Kong Polytechnic University, Hong Kong, China;School of Information, Southern Yangtse University, WuXi, JiangSu, China
Venue:
Pattern Recognition
Year:
2008

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Abstract

Image segmentation is one of the most important and fundamental tasks in image processing and techniques based on image thresholding are typically simple and computationally efficient. However, the image segmentation results depend heavily on the chosen image thresholding methods. In this paper, histogram is integrated with the Parzen window technique to estimate the spatial probability distribution of gray-level image values, and a novel criterion function is designed. By optimizing the criterion function, an optimal global threshold is obtained. The experimental results for synthetic real-world and images demonstrate the success of the proposed image thresholding method, as compared with the OTSU method, the MET method and the entropy-based method.