FORGERY PREVENTING BILL PATTERN DETECTOR AND DETECTING METHOD

Japanese Patent JP3825070

B2

PROBLEM TO BE SOLVED: To detect a bill when the bill is in an optional position of a platen image, and it is accompanied by an optional background image. SOLUTION: In a bill forgery preventing detector for detecting an image to be copied is a bill or not by a template 2, each template 2 comprises a memory means for storing a plurality of templates including at least one prescribed fixed point 4, an inspecting means for inspecting a part of the image to be copied and judging whether it contains a prescribed picture element intensity arrangement or not, an arrangement direction judging means for determining the arrangement direction of the detected prescribed picture element intensity arrangement, an arranging means for arranging the template 2 in the same direction as the prescribed picture element intensity arrangement according to a determined arrangement direction 6, and a conforming means for comparing a plurality of templates 2 with the prescribed picture element intensity arrangement. By the comparison of the conformation result of the conforming means with a threshold, it is detected that the bill is contained in the image to be copied.