中文摘要：

小波变换作为一种新的工具，在信号去噪中得到了重要的应用。本文对双Haar小波变换系数，提出了MAP的估计方法，并对其在图像去噪中的应用进行了讨论。实验表明所提出的小波收缩算法与软门限方法相比较，用于图像去噪时可以给出更好的结果。

英文摘要：

As a new tool, the wavelet transform has been used successfully in signal denoising. In this paper, the MAP estimate of double Haar wavelet transform coefficients is developed. Also, its application to image denoising is discussed. Examples show that the proposed approach is better than the soft thresholding in image denoising.