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The mixture problem in computer mapping of terrain: Improved techniques for establishing spectral signature, atmospheric path radiance, and transmittanceThe results of LANDSAT and Skylab research programs on the effects of the atmosphere on computer mapping of terrain include: (1) the concept of a ground truth map needs to be drastically revised; (2) the concept of training areas and test areas is not as simple as generally thought because of the problem of pixels that represent a mixture of terrain classes; (3) this mixture problem needs to be more widely recognized and dealt with by techniques of calculating spectral signatures of mixed classes, or by other methods; (4) atmospheric effects should be considered in computer mapping of terrain and in monitoring changes; and (5) terrain features may be used as calibration panels on the ground, from which atmospheric conditions can be determined and monitored. Results are presented of a test area in mountainous terrain of south-central Colorado for which an initial classification was made using simulated mixture-class spectral signatures and actual LANDSAT-1-MSS data.
Document ID
19760010438
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smedes, H. W.
(Geological Survey Denver, CO, United States)
Hulstrom, R. L.
(Martin Marietta Aerospace Corp. Denver, United States)
Ranson, K. J.
(Colorado State Univ.)
Date Acquired
August 8, 2013
Publication Date
June 1, 1975
Publication Information
Publication: NASA. Lyndon B. Johnson Space Center NASA Earth Resources Surv. Symp., Vol. 1-B
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
I-2
Accession Number
76N17526
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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