针对单幅遥感影像内部所产生的亮度不均匀现象, 提出了一种基于小波变换改进的MASK匀光算法。该方法在利用小波变换获得不均匀背景图像的过程中, 对小波系数进行了自适应非线性改进, 克服了直接利用分块取均值获取背景影像的不足, 试验表明该算法能够较好地解决单幅遥感图像中亮度不均匀的现象, 具有较强的实用性。

Aimed at the uneven illumination phenomena in the remote sensing image, this paper puts forward an improved MASK dodging method based on wavelet. According to the process of MASK dodging method, this method proposed improves the modulus of wavelet self-adaptively and non-linearly in the process of the background image obtaining. Finally the experiments are given, which show that this improved dodging method can avoid the disadvantages of the method using mean in blocks as the modulus of wavelet directly, and they also show that this method in this paper can resolve the uneven illumination in remote sensing image. It can be applied in many cases.