A Review on Global Binarization Algorithms for Degraded Document Images
نویسنده
چکیده
Several algorithms have previously been proposed for improving the thresholding of degraded document images. No algorithm can solve all types of problems, but some algorithms are better than others for specific situations. This article reviews global binarization algorithms for improving degraded document images, thus indicating their differences and similarities, and also their advantages and disadvantages. They have been classified into three groups, which are global thresholding, local thresholding and hybrid thresholding. In total, 7 image global threshold binarization algorithms are summarized.
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تاریخ انتشار 2011