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Ratio maps of iron ore deposits Atlantic City district, WyomingPreliminary results of a spectral rationing technique are shown for a region at the southern end of the Wind River Range, Wyoming. Digital ratio graymaps and analog ratio images have been produced for the test site, but ground truth is not yet available for thorough interpretation of these products. ERTS analog ratio images were found generally better than either ERTS single-channel images or high altitude aerial photos for the discrimination of vegetation from non-vegetation in the test site region. Some linear geological features smaller than the ERTS spatial resolution are seen as well in ERTS ratio and single-channel images as in high altitude aerial photography. Geochemical information appears to be extractable from ERTS data. Good preliminary quantitative agreement between ERTS-derived ratios and laboratory-derived reflectance ratios of rocks and minerals encourage plans to use lab data as training sets for a simple ratio gating logic approach to automatic recognition maps.
Document ID
19730019515
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vincent, R. K.
(Environmental Research Inst. of Michigan Ann Arbor, MI, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Publication Information
Publication: NASA. Goddard Space Flight Center Symp. on Significant Results obtained from the ERTS-1, Vol. 1, Sect. A and B
Subject Category
Geophysics
Report/Patent Number
PAPER-G16
Accession Number
73N28247
Funding Number(s)
CONTRACT_GRANT: NAS5-21783
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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