摘要
射线数字成像是当前射线检测与诊断技术发展的方向 ,图像降噪增强是提高射线成像检测灵敏度和分辨力的关键。重点探讨以排序滤波为代表的非线性滤波图像降噪增强方法。对射线图像的处理表明 ,线性滤波在降噪的同时会引起较大的边缘模糊 ,而排序滤波不仅降低噪声且能保持图像细节 ,提高图像质量效果明显。
Real-time digital radiography is a development tendency for radiographic inspection and diagnosis. Enhancement of image is the key to improve resolution and sensitivity of radiographic inspection. The algorithm and character of rank-order filter which is one of the nonlinear ones are discussed emphatically. All methods have been used to process radiographic image and the results have illustrated that linear filter can reduce noise but corrupt edge, and rank-order filter can reduce noise and preserve the detail at the same time, and is effective on improving image quality.
出处
《无损检测》
2002年第7期281-285,共5页
Nondestructive Testing
