基于云检测的Wallis匀光改进算法

Improved Wallis Dodging Algorithm Based on Cloud Detection

针对遥感影像生产过程中Wallis滤波匀光算法不适用于大面积含云影像的缺点，提出一种基于云检测的Wallis匀光改进算法，使用Otsu分割算法实现影像云区检测，然后仅对非云区域影像进行统计和处理。实验表明，该方法可有效改善含云影像的匀光效果。

Considering the shortcomings that in the production process of remote sensing image, the image dodging algorithm based on Wallis filteris is not suitable for areas that contain many clouds, the authors propose an improved Wallis dodging algo- rithm. First, Otsu algorithm is used to detect cloud areas in the satellite image. Then the images of non - cloud region are calcu- lated and processed by Wallis filters . The results show that this method can significantly improve the dodging effect of remote sensing image that includes clouds.