The Analysis and Correction of Factors Influencing Imaging

Abstract:-The factors influencing imaging quality of industrial digital radiographic imaging system are analyzed detailedly. This imaging system is a new type industrial digital radiographic imaging system developed by author, The structure of ray conversion screen and its non-uniformity, the discordance analysis of scientific grade CCD and vignetting effect of the optical system are introduced. The correction method of non-uniformity for testing system is studied, the correction arithmetic is given and the methods of reducing circuit random noise and the noise produced by scatter ray are illuminated. The correction image and the one that don’t be corrected are given, the merits of this system and problem need to be more studied are illuminated. Key-Words:- digital radiographic imaging, non-uniformity correction, x ray conversion, scientific grade CCD, dark curren