Research on Wavelet Image Threshold De-noising

The purpose of image denoising is to restore the original image from the observed noisy image, under the conditions of meeting the minimum mean-square error criteria. In this paper, it summarized the basic principles of the wavelet threshold de-noising and various factors that affect the denoising performace in a complete de-noising algorithms, and analyzed several commonly used threshold de-noising methods and experiment with the Lena image. It provided the basis of selection and improvement for the actual image processing de-noising method.