supported by the National Nature Science Foundation of China(51375002,51005056)。
In order to improve the work efficiency of non-destructive testing(NDT)and the reliability of NDT results,an automatic method to detect defects in the ultrasonic image was researched.According to the characterization ...
This work is supported by the National Natural Science Foundation of China (51375002,51005056) and the Postdoctoral Science- Research Developmental Foundation of Heilongjiang Province (LBH-Q13079).
In ultrasonic time of flight diffraction (TOFD) D-scan image, only a small fraction represents defects, whereas the majority is redundant. Because of the low contrast between defect and background image, it is diffi...