METHOD AND SYSTEM FOR URBAN IMPERVIOUS SURFACE EXTRACTION BASED ON REMOTE SENSING

摘要

The present invention provides a method and system for urban impervious surface extraction based on remote sensing. The method includes: acquiring Landsat data; preprocessing the Landsat data to obtain preprocessed remotely sensed data; separately calculating an NDUI, an MNDWI, and a SAVI based on the remotely sensed data; stretching the NDUI, the MNDWI, and the SAVI to obtain a stretched NDUI, MNDWI, and SAVI; calculating an NDUII based on the stretched NDUI, MNDWI, and SAVI; and extracting impervious surface information by using a thresholding method based on the NDUII. The present invention can improve impervious surface extraction accuracy.