The processing methods that enhance the image of defective areas in the radiographs , such as charge region fixation , image substraction , image filtration , image trinization , are presented .
提出用装药区定位、减影，滤波去噪、三值化等图象预处理方法增强图象中的疵病信息；
The processing methods that enhance the image of defective areas in the radiographs , such as charge region fixation , image substraction , image filtration , image trinization , are presented .
提出用装药区定位、减影，滤波去噪、三值化等图象预处理方法增强图象中的疵病信息；
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