Character region extraction program, character region extraction apparatus and character region extraction method

摘要

To improve the accuracy of extraction when extracting a character area from an image.SOLUTION: Provided is a character area extracting program for causing a computer to execute the process of: changing the relation of relative sizes of an image and a scanning window that scans the image; causing the scanning window to be scanned under each of the changed relations and thereby specifying a scan position where the edge density of an image area included in the scanning window is greater than or equal to a prescribed threshold; extracting the area indicated by the scanning window at the specific scan position as a character area candidate; determining a character area candidate the edge density is largest from among overlapping character area candidates when the extracted character area candidates overlap each other; and extracting an image area included in the determined character area candidate as a character area.SELECTED DRAWING: Figure 3