1. A method for converting an input image to a binary image, the input image having pluralities of pixels defining text and background, comprising: blurring the input image with one or more controllers to obtain a blurred image; determining thresholds for the pixels of the input image and corresponding pixels in the blurred image by which the pixels and corresponding pixels will be defined as either a black pixel or a white pixel; and with the one or more controllers, setting to black pixels in the binary image those pixels of the input image being defined as said black pixels and having corresponding pixels in the blurred image being defined as said black pixels relative to the thresholds.