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http://dx.doi.org/10.6109/jicce.2011.9.5.487

Splitting and Merging Algorithm Based on Local Statistics of Sub-Regions in Document Image  

Thapaliya, Kiran (Department of Information and Communication Engineering, Chosun university)
Park, Il-Cheol (Department of Information and Communication Engineering, Chosun university)
Kwon, Goo-Rak (Department of Information and Communication Engineering, Chosun university)
Abstract
This paper presents splitting and merging algorithm based on adaptive thresholding. The algorithm first divides the image into blocks, and then compares each block using the calculated thresholding value. The blocks which are same are merged using the certain threshold value and different blocks are split unless it satisfies the threshold value. When the block has been merged, maximum and minimum block sizes are determined then the average block size is determined. After the average block size is determined the average intensity and standard deviation of average block is calculated. The process of thresholding is applied to binarize the image. Finally, the experimental results show that the proposed method distinguishes clearly the background with text in the document image.
Keywords
standard deviation; image enhancement; split and merge; mean;
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