基于小波变换的炮弹射线图像增强技术研究

Technology Research on Shell Beam Image Intensification Based on the Wavelet Transformation

利用小波变换对含有噪声的图像进行变换,针对其小波系数进行阈值操作,得出降噪后的增强图像。首先对原始射线图像进行对数变换,其次对变换后的图像进行小波阈值降噪处理,最后对阈值降噪处理后的图像进行指数拉伸变换,求得消除噪声以后的增强射线图像。实验证明提出的方法对炮弹射线图像处理是有效的。

By making the wavelet transformation to the picture containing noise and carrying on the threshold value operation in view of its wavelet coefficient and therefore the enhancement picture with noise reduced is obtained. First carry on the logarithm transformation to the initial ray picture, then perform wavelet threshold value noise reduction process- ing to the picture which has been transformed and finally continue with the index stretch transformation after the threshold value noise reduction processing picture and ultimately the enhancement beam picture without noise is obtained. The experiments proved that the proposed method is useful in shell beam picture processing.