The Image Processing of Digital Radiography in Frequency Dominant

The application of frequency domain treatment in digital radiographic testing(DR) image enhance processing of the flaw image had been explored. The processing method of high pass filtering was implemented by Matlab 7. It was proved that the frequency domain treatment could effectively improve the figure sensitivity of the DR. The frequency domain treatment was used practically in the image processing of DR with kinds of classical defects. it was validated that the detectable rate could be improved greatly.