Procedure to update transportation map of the Bedell Flat, Nevada, quadrangle from high-resolution satellite imagery.

摘要

This thesis develops and documents a technique to update the transportation data layer for the area covered by the U.S. Geological Survey Bedell Flat, Nevada, 1:24,000 scale map. This is a rural area located 25 kilometers north of Reno, Nevada. Recent high resolution satellite imagery is utilized to identify and map 27.7 kilometers of new road segments related to low density urban development and a 9.7 kilometer section of a major gas line. Procedures are developed that utilize convolution masking to extract new road alignments from satellite imagery utilizing desktop computer hardware and software. New road segments are then vectorized for use in Geographic Information Systems and desktop publishing packages. This data is then verified by examination of aerial photography, statistical analysis, and field investigation.