A DISCUSSION ON IMAGE BINARIZATION METHODS.

Image binarization is the process of representing an image pixel in binary format by assigning a value to the pixel as either 0 or 1. Before conversion to binary, the image can be in either gray-scale having pixel value between 0 to 255 or color, i.e., a pixel having value between 0 to 255 for each of the red, green, blue (RGB) channels separately. The method through which this conversion is implemented over an image is called as the binarization method. This paper reviews the methodology, contributions, advantages, and disadvantages of the existing studies on binarization methods. Further, the paper also highlights the problems in image processing with the scope for future enhancements. [ABSTRACT FROM AUTHOR]