Character entry box detection method, character entry box detection apparatus and program

摘要

PROBLEM TO BE SOLVED: To accurately detect a character entry frame even in the case of the absence of a frame line and so on without being affected by noise, a background, etc., by flexibly responding to various cases in a method and a device for character entry frame detection, which detect a zip code frame, etc.;SOLUTION: The character entry frame detecting device inputs an image of the top surface, etc., of a postal card with the zip code frame. The edge parts of frame lines, etc., in the inputted image are enhanced and extracted by pixels; and polling in pixel units is carried out in a voting space according to information on the edge part in pixel units extracted from the image so that the center point of the frame in the voting space of an orthogonal coordinate system is the maximum point of a voting value V (i, j) and the maximum point of the voting value V (i, j) corresponding to the center of the frame in the voting space is detected.;COPYRIGHT: (C)2003,JPO