1. An image processing apparatus comprising: a reader configured for reading data of each pixel of a binarized image; a plurality of matrix modules configured for performing filtering operations to the data based on a control signal, the plurality of matrix modules serially connected, and a first one of the series being connected to the reader; a selector configured for selecting one of the plurality of matrix modules based on the control signal and outputting filtered results from the selected one of the plurality of matrix modules; and a controller configured for generating the control signal.