Factors affecting accuracy of binarization for document images
Harjinder Singh Dhanjal ., Ramandeep Kaur · ZENITH International Journal of Multidisciplinary Research · 2013
Scanned and camera captured document images may contain 256 grey levels, which needs large computations for text extractions. Binarization lowers these computations by converting 256 grey levels into two levels (0/1). General image binarization function can be expressed as given in Equation