CHARACTER RECOGNITION APPARATUS, IMAGE DISPLAY APPARATUS, IMAGE SEARCH APPARATUS, CHARACTER RECOGNITION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To obtain a text of a recognition result so as to complement a hidden character.SOLUTION: A character recognition apparatus includes: a detection section which detects a visible text area from an input image; a first recognition section that performs character pattern recognition on the visible text area to calculate character pattern recognition cost, in accordance with a likelihood of a character pattern; an estimation section which estimates a semi-hidden text area which is an area formed by integrating a hidden text area with one or more visible text areas; a second recognition section which calculates an integration cost formed by integrating the character pattern recognition cost calculated with respect to the visible text area included in the semi-hidden text area, with linguistic cost corresponding to a linguistic likelihood of a text to be applied to the whole of the semi-hidden text area; and an output section which outputs a text selected or ranked based on the integration cost, as a result of character recognition on the semi-hidden text area.SELECTED DRAWING: Figure 3