基于LBV变换与多分辨率分析的水体提取研究

Water Body Extracting Based on LBV Transformation and Multi-resolution Analysis

给出了一种改进的Otsu方法,采用LBV变换对TM数据进行处理,实现了B分量阈值的自动选取,以有效地提取水的精度,并引入小波多分辨率分析方法,进一步提高了自动提取水体的精度。

After LBV transformation is used to deal with the TM data,the water body has a large gray value on the B component image.On the B component image,the threshold is automatically selected based on an improved method of Otsu in order to extract the water body.To improve the accuracy of automatic extraction of water body,we introduce a wavelet multi-resolution analysis method to deal with B component image.Tests indicate that this method can increase the proportion of correct water body by 0.36%,also can reduce the proportion of wrong water body by 2.96%.