保留了大部分包含信号的小波系数,因此可以较好地保持图象细节。小波分析进行图像去噪主要有3个步骤:(1)对图象信号进行小波分解。(2)对经过层次分解后的高频系数进行阈值量化。(3)利用二维小波重构图象信号。-Retained most of the wavelet coefficients that contains the signal, so you can maintain better image details. Wavelet analysis for image denoising three main steps: (1) wavelet decomposition of the image signal. (2) through the hierarchical decomposition of the high-frequency coefficient thresholding. (3) the use of two-dimensional reconstruction of wavelet image signal.