Image Fusion Based Enhancement of Eddy Current Nondestructive Evaluation

摘要

Recent advances in instrumentation and signal processing allow the acquisition of eddy current NDE signal in the form of c-san images. A technique is presented in this paper to enhance eddy current inspection based on image fusion, based on multi-spectral, multi-temporal, and multi-resolution image fusion. The developed algorithm is motivated by human eye perception of colored objects. Mathematically it is based on the IHS transform, the PCA transform as well as the a trous wavelet analysis. Quality of resulting fusion images is evaluated based on statistical measures.