Patent ID: 6574303
Filing Date: 2003-06-03
Classification: G01B,G01N

Abstract:
A radiation inspection apparatus comprising:a radiation generator for generating radiation toward an object to be inspected; a radiation detector disposed in such a way to face said radiation generator, for detecting the radiation transmitted through the object to be inspected and outputting a pixel data of each pixel consisting an image of the object to be inspected; and a data processor unit for performing data processing by using the pixel data outputted from said radiation detector, wherein said data processor unit calculates a difference between that pixel data of each pixel, which is outputted from said radiation detector, and the pixel data of each of surrounding pixels thereof, and obtains a total of a circumference length of the object to be inspected by totalizing the number of pixels, gray level data obtained by difference processing correspondingly to each of which is within a predetermined gray level range, and determines from a total of the circumference length of the object whether or not a crack or a nick occurs in the object.