METHOD AND APPARATUS FOR INSPECTING STRIPE LIKE DEFECT

摘要

PROBLEM TO BE SOLVED: To detect even a stripelike defect of low sensitivity with high accuracy when an inspection image inputted as a color image is processed as monochromatic images of R, G and B. SOLUTION: A stripelike defect inspection apparatus detecting a stripe defect generated on printed matter from an inspection image wherein the printed matter is inputted as a color image is equipped with an image input part 10 inputting the inspection image to separate the same into respective monochromatic images of R, G and B, a pattern removing part 12 for removing a pattern part from the inspection image with respect to each of the monochromatic images, a stripe emphasizing part 14 applying emphasizing processing to the stripe part present in the image after the pattern is removed, an RGB synthesizing part 20 synthesizing the respective monochromatic images after emphasizing processing to form a synthetic image and a judge part 16 for judging the presence of a stripe-like defect based on the synthetic image.