A method for extracting small water bodies based on DEM and remote sensing images.

ABSTRACT: Accurate and comprehensive extraction of water bodies facilitates the study of watershed changes and water quality monitoring and also provides a reference for ecological evolution. When extracting tributaries and small water bodies based on remote sensing images, there are problems such as uncertain threshold selection, more edge voids, and extraction difficulties. The improved water body extraction method (Combination Normalized Difference Water Index), fuses Digital Elevation Model and remote sensing images. The river network is extracted from the Digital Elevation Model and the remote sensing image is normalized. After fusion, threshold comparison is performed, and the threshold of the river network location is used as the basis for connecting the broken water bodies, it is compared an

SUBMITTER: Sun Q 

PROVIDER: S-EPMC10774334 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature