Процес накладання видимого зображення і термограми у тепловому неруйнівному контролі

Abstract

This paper considers the method of automated overlaying of a visible image on a thermogram to improve the efficiency of thermal nondestructive testing. The main attention is paid to eliminating the influence of the heterogeneity of the emissivity of the object's surface by digital processing of the obtained data. The proposed algorithm includes thermogram analysis, image preprocessing, and area of interest detection. For accurate comparison, spatial calibration is used to compensate for radial distortions of the optical system. The obtained results are visualized in a semitransparent mode, which allows saving the information of both images.