1. A method of revising Optical Character Recognition (OCR) data stored on a non-transitory, computer-readable medium, comprising: indexing, by an OCR review element executed by a processor on a terminal device, locations of potential errors within the OCR data; displaying, by the terminal device, a region within the OCR data that corresponds to one or more of the locations of potential errors, wherein displaying the region within the OCR data comprises displaying a sentence within a target image, wherein the target image is an image from which the OCR data was obtained, wherein the sentence corresponds to the region within the OCR data that corresponds to one or more of the locations of potential errors, and wherein the sentence overlays the target image; receiving, from a user input device, an editing operation indicating a correction to be made to the OCR data; and editing, by the terminal device, the OCR data in response to the editing operation.