|
Track: Environmental Management
Kristi Sayler
U.S. Geological Survey
Science and Applications Branch
Sioux Falls, SD 57198
Telephone: 605-594-6058
Fax: 605-594-6529
E-mail: sayler@edcsnw43.cr.usgs.gov
Internet Image Viewer for Landsat Thematic Mapper Data: A Mojave Desert Prototype
Defining Issue: A geographically based image viewer was developed to provide Landsat thematic mapper (TM) image data on the Internet. The viewer was created as part of the Department of Defense's Mojave Desert Ecosystem Initiative (MDEI). The purpose of the MDEI was to develop scientific data layers in an ecosystemwide geographic information system and to ensure the widest access and use of these data by making them available on the Internet. GIS Solution: The TM image viewer allows users to select and browse through a geographically referenced database of TM images. After users choose an area of interest from an index map created with ArcInfo, they obtain a list of the images containing the specified area. They can view images from the list and, depending on their web browsers, either print the data for a graphic reference or save the graphic file for inclusion in other text files or reports. In addition, a customer service link is included to allow users to order full-scene data sets. In the
future, graphic file output will be augmented to allow transfer of geo-eferenced image data (for example, TIFF tags,word files, etc.) with FGDC-compliant metadata. Software: The viewer is written in the C programming language with supplemental shell scripts. Additional capabilities will be incorporated into the viewer, and similar capabilities can be developed for topographic data or other remotely sensed data for any user-defined study area.
|
|
