A novel inner small-caliber detection method based the template matching algorithm

The inner small-caliber detection is important in most cases such as oil-pipe and gun. because in most cases, it must detect the rust and crack.This paper aims at the inner test for small caliber, and present a small volume structures.This system consist of two parts: the front image acquisition part, which uses the method of grin-lens array combined the light-cone to realize the photoelectric conversion and digitalization,the functions of the last part is to process the image acquisition part. The characteristics of this image is obtained by the template matching method, which is realized under Matlab programming platform, now this method is used to detect the inner gun, and obtained the satisfactory results.