DEFECT INSPECTION DEVICE, DEFECT INSPECTION METHOD, DEFECT INSPECTION PROGRAM AND RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To detect a defect on a surface of a rotating object without affine transform, in visual inspection using a line sensor which images an annular or sectoral surface area of the object in a rotation radius direction or a substantial rotation radius direction.SOLUTION: A defect inspection device visually inspects an object by use of a line sensor 5 which images an annular or sectoral surface area of a rotating object in a rotation radius direction or a substantial rotation radius direction. An area dividing unit 39 of an image processing board 15 divides image data captured by the line sensor 5 or a pixel array region of the processed image data into multiple sub-areas in an axial direction corresponding to an arrangement direction of the line sensor 5. A defect detection unit 45 detects a defect on the surface of the object by executing pattern matching by use of a template group formed for each of the sub-areas.