ASSESSMENT OF LAND COVER CHANGES ON SUBI REEF IN TRUONG SA ISLANDS, VIETNAM USING MULTI-TEMPORAL LANDSAT IMAGES

Abstract

In this article, the author proposes that Landsat images should be pre-processed using the DOS method for atmospheric correction and the Gram-Schmidt method for image enhancement. According to the results, the overall classification accuracy of multi-temporal images achieved over 85%, and Landsat images are suitable for classifying land cover on small islands in Truong Sa Islands, such as Subi Reef.