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 to 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, wherein the recognition unit provides information corresponding to the character recognition result to the display unit by searching and obtaining information corresponding to a recognized character in a dictionary included in a mobile device, and wherein the recognition unit performs a search using the character recognition result as a query word in the search after character recognition is performed on the error region, and provides the search result to the display unit.