期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2002
卷号：XXXIV Part 4
出版社：Copernicus Publications
摘要：Detailed vegetation databases are being compiled from color infrared (CIR) aerial photographs and used in conjunction with 3D terrain visualization techniques to create interactive displays of National Parks and Historic Sites in southeastern United States. The sizes of the parks vary from about 2000 km 2 for the rugged Great Smoky Mountains National Park, located in the Appalachian mountains of Tennessee and North Carolina, to small national battlefields and historic sites of less than 100 ha. The dense forest cover in many of the parks has required the use of Global Positioning System (GPS) surveys in combination with softcopy photogrammetry, DEMs, image processing techniques and geographic information system (GIS) procedures to construct large-scale digital orthophotos and vector-based vegetation databases (Welch et al., 2000). As part of the study, the DEMs generated by stereocorrelation procedures from the color IR photographs were compared to those available from the U.S. Geological Survey. Mapping the floristically diverse parks also required the development of detailed vegetation classification systems suitable for use with 1:12,000 and 1:40,000 scale CIR aerial photographs.
