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Using a geographic information system and scanning technology to create high-resolution land-use data sets

Water-Resources Investigations Report 96-4100

Prepared in cooperation with the U.S. Environmental Protection Agency
By:
, , and

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Abstract

A geographic information system (GIS) procedure was developed to compile low-altitude aerial photography, digitized data, and land-use data from U.S. Department of Agriculture Consolidated Farm Service Agency (CFSA) offices into a high-resolution (approximately 5 meters) land-use GIS data set. The aerial photography consisted of 35-mm slides which were scanned into tagged information file format (TIFF) images. These TIFF images were then imported into the GIS where they were registered into a geographically referenced coordinate system. Boundaries between land use were delineated from these GIS data sets using on-screen digitizing techniques. Crop types were determined using information obtained from the U.S. Department of Agriculture CFSA offices. Crop information not supplied by the CFSA was attributed by manual classification procedures. Automated methods to provide delineation of the field boundaries and land-use classification were investigated. It was determined that using these data sources, automated methods were less efficient and accurate than manual methods of delineating field boundaries and classifying land use.

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Using a geographic information system and scanning technology to create high-resolution land-use data sets
Series title:
Water-Resources Investigations Report
Series number:
96-4100
Year Published:
1996
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Iowa City, IA
Contributing office(s):
Iowa Water Science Center
Description:
iv, 41 p.
Online Only (Y/N):
N
Additional Online Files (Y/N):
N