Industrial Ct Technology - To Improve The Quality Of Ct Images In Several Ways

With the developments of aerospace,ordnance and automobile industries, it isimperative to inspect their vital components. Industrial Compaterized TomograPhy(lCT) is one of the advanced means for NDT which has the virtUres of non-destructive, non-contact and high resolution. It is called the best means for NDT bythe circle of international NDT technology.The whole process of ICT is discussed from pretreat to image reconstruction. Asfor the influence on the image quality different filter lengths are compared. UsingCCD matrix as detectoF, arbitrary s1ices can be reconstructed. According to thespatial spectrum of projections, a Butterworth window is used to filtrate theprOjections and desirabIe images are obtained. Several sorts of artifacts on CT imageare analysed and their causes are investigated. To reconstruct images fromtrunctuated projections, some feasible methods are developed,...