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Main Title Accuracy assessment of 1992 Landstat-MSS derived land cover for the Upper San Pedro watershed (U.S./Mexico) {microform} /
Author Maingi, J. K.; Kepner, S. E.; Edmonds, W. G.
CORP Author Arizona Univ., Tucson.;Environmental Protection Agency, Las Vegas, NV. National Exposure Research Lab.
Publisher U.S. Environmental Protection Agency, Landscape Ecology Branch,
Place Published Las Vegas, NV. :
Year Published 2002
Report Number EPA/600/R-02-040; NERL-LV-ESD-02-062
Stock Number PB2002-107521
OCLC Number 52497962
Subjects Landsat satellites; Land cover; Image analysis; Methods; Satellite observation; Geography; Remote sensing; Mexico; United States; Maps; Accuracy assessments; Sampling; Classification accuracy; Digital Orthophoto Quads(DOQs); Upper San Pedro Watershed
Holdings
Library   Call Number Additional Info Location Date Modified
ERBD PB2002-107521 NERL/ESD-LV Library/Las Vegas,NV 06/27/2003
NTIS PB2002-107521 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 19 p. : ill. ; 25 cm.
Abstract The utility of Digital Orthophoto Quads (DQQS) in assessing the classification accuracy of land cover derived from Landsat MSS data was investigated. Initially, the suitability of DOQs in distinguishing between different land cover classes was assessed using high-resolution airborne color video data. A cross-tabulation of the analyst's DOQ labels and the reference video label was produced and had an overall accuracy of 92%. This indicated that the DOQ data could be used to identify and distinguish between the different land cover classes. A 1992 land cover map for the upper San Pedro Watershed was available for accuracy assessment. The map was interpreted and generated by Instituto del Medio Ambiente y el Desarrollo Sustentable del Estado de Sonora (B4ADES), Hermosillo, Sonora. The Environmental Protection Agency (EPA) supplied Arizona Remote Sensing Center (ARSC) with approximately 60 DOQs for 1992. Most of the land cover classes were fairly well represented in the DOQs and covered between 24% and 41% in eight out of ten land cover classes. Only the Barren and Agriculture classes were poorly represented in the available DOQs covering 5.3% and 14.2% of the map area, respectively. A total of 457 sample points was used for the accuracy assessment. Allocation of sample points to land cover classes was through stratified (by land cover class area) random sampling, with a 20-sample minimum for the smallest classes. Map labels for the sample points were compared with reference DOQ labels and an error matrix generated. An overall classification accuracy of about 75% was obtained.
Notes Includes bibliographical references. Microfiche.
Supplementary Notes Sponsored by Environmental Protection Agency, Las Vegas, NV. National Exposure Research Lab.
Availability Notes Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
Author Added Ent
Marsh, Stewart.;
Kepner, William G.;
Edmonds, Curtis M.
Corporate Au Added Ent U.S. Environmental Protection Agency.
PUB Date Free Form 2002.
NTIS Prices PC A04/MF A01
BIB Level m
OCLC Time Stamp 20030625114023
Cataloging Source OCLC/T
Language eng
Origin OCLC
Type MERGE
OCLC Rec Leader 00967nem 2200253Ka 45020