基于GS光谱锐化方法的侵蚀沟提取研究

Research on Erosion Ditch Extraction Based on Gram-Schmidt Spectral Sharpening Method

对侵蚀沟提取研究过程中的影像多种融合方法进行比较,构建融合数据,得出适合侵蚀沟解译的融合算法,以GS光谱锐化方法为重点,论述基于融合影像以及沟底线、沟底线坡度值和目视解译提取的综合算法方法,对实验区的侵蚀沟进行提取,实现了提高图像信息量、增强侵蚀沟解译精度的目标。对侵蚀沟较为集中的地区,如东北平原腹地、黄土高原等地形区域的侵蚀沟影像自动提取具有一定的借鉴作用。

This paper compares multiple extraction methods in the research process of erosion ditch extraction,constructs fusion data,and obtains a fusion algorithm suitable for extracting erosion ditch parameters.With the focus on the Gram-Schmidt spectral sharpening method,it discusses a comprehensive algorithm method based on fusion images,ditch bottom line,ditch bottom line slope value,and visual interpretation for extracting erosion ditches in the experimental area,achieving an increase in image information content.The goal is to enhance the accuracy of erosion ditch interpretation.This paper has certain reference value for automatic extraction of erosion ditch images in areas with concentrated erosion ditches,such as the hinterland of the Northeast Plain and the Loess Plateau.