基于多尺度小波变换的x射线图像去噪

Denoising Method of X-ray Digital image based on Multiscale wavelet-change

根据X射线数字图像本身的特点,文章提出了一种新的去噪方法,这种方法利用小波变换模极大值(WTMM)在各尺度上的不同传播特性对图像进行边缘检测同时结合小波包去噪算法实现对图像的去噪方法。实验结果表明,该方法不但具有较高的峰值信噪比,而且很好的保留了图像的边缘信息,能满足X射线图像后续处理的要求。

According to X-ray digital image＇s charaeteristic, a new method of denoising X-ray digital image was presented. This method based on the different transformation of wavelet transform modulus maxima （WTMM） multiscale edge detetion and using wavelet package denoising method. Simulation results show that higher peak-signal-to-noise （PSNR） ratio and keep the edge information effectively. It can meet the request of the subsequent X-ray digital image process better.