An Improved Binarization Technique for Degraded Document Images Using Adaptive Image Contrast

Abstract This paper presents a new adaptive approach to deal with degraded documents by using binarization method. The proposed method is mostly used due to its capability to work without any requirement of parameter tuning by the user. And this method can deal with documents degradations which normally occur due to non-uniform illumination, shadows, large signal-dependent noise, low contrast, strain and smear. This improved document image binarization technique focus on improving quality of text from poorly degraded document images. And this can be achieved with good efficiency and accuracy. As today’s world is moving towards digitization, binarization method comes in a demand, to achieve the preserving target of historical documents. to deal with the degraded documents this proposed method uses the adaptive contrast map as the combination of local image contrast and the local image gradient.