Detecting methods of surface features of 1: 50 000 topographic map based on SPOT 5 imag-a case study on Qixiangcuo area in Tibet
HONG ZHigang ① , DAI Erfu ②, CHU Meihua ③ ( ①Chinese Academy of Surveying and Mapping, Beijing 100039; ②Institute of Geographical Sciences and Natural Resources Research ,CAS Beijing 100101;③Shandong University of Science and Technology, Qingdao 266510)
Some of the 1: 50 000 topographic maps are still not available in Western China. With the development on spatial technology, computer technology and information technology, great advances has been made on remote sensing application. At the same time, multispatial and multiresolution images available have based the macroscale map charting. In this paper, an high resolution remote sensing image, SPOT 5, is used for 1: 50 000 topographic maps in Qixiangcuo area in Tibet. results show that such image can satisfy the requirement of 1: 50 000 topographic maps in this area. to improve the resolution on detecting more surface features, multitemporal and multiresolution images should be used in the future studies.