1. An apparatus for recognizing characters, the apparatus comprising: a display unit to display an image in which a region of interest or an error region is indicated, and a character recognition result; a region-of-interest setting unit to set the region of interest in the image displayed on the display unit; a recognition unit to perform character recognition on the region of interest or the error region and provide the character recognition result to the display unit; and an error correction unit to set the error region in the image displayed on the display region, perform image copying on the set error region according to a user input, and provide a handwriting input using the image copying to the recognition unit.