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介绍了小波阈值技术在焊缝图像降噪处理中的应用。通过对焊缝图像的小波系数进行阈值处理 ,可以有效降低噪声 ,同时又较好地保持焊缝边缘细节。文中详细讨论了这种小波阈值降噪技术 ,并给出了小波以及阈值选取的方法。由实验结果可知 ,小波阀值降噪技术是一种有效的焊缝图像平滑方法。
The application of wavelet threshold in weld image denoising is introduced. Thresholding the wavelet coefficient of the weld image can effectively reduce the noise and keep the edge details of the weld well. This paper discusses in detail the wavelet threshold denoising techniques, and gives the wavelet and threshold selection method. The experimental results show that the wavelet threshold noise reduction technique is an effective weld image smoothing method.