基于SPOT遥感影像的下垫面信息获取研究

分析了利用SPOT卫星影像提取下垫面信息的现状,包括工程实践中通过SPOT立体像对恢复DEM的方法及其特点以及其他下垫面信息的提取方法及其特点;综述了智能化、高效率获取下垫面信息的研究进展.结果表明,随着科学技术的进步,空间分辨率低、大区域、高质量立体像对获取困难及云层覆盖等SPOT影像数据本身存在的缺陷将逐步被克服,但智能化、高效率地进行下垫面信息的提取,将是今后必须努力解决的理论与技术难题.

Extraction of underlying surface information from SPOT remote sensing imagery

An analysis was performed of the method and characteristics of SPOT stereopair for DEM generation and some other methods for underlying surface information extraction currently used in engineering.Some advances in research of high-intelligent and efficient methods for underlying surface information extraction were reviewed.The results show that,with the development of science and technology,some defects of SPOT imagery,such as low space resolution,difficulties in obtaining high quality stereopair for large areas,and inability of optical sensors to penetrate cloud layer,will be gradually overcome;nevertheless,the theory and method for intelligent extraction of underlying surface information with high efficiency will be the key points for further research.