Spectral ratio imaging methods for geological remote sensing from aircraft and satellitesAn improved photogrammetric technique (scannergrammetry) for the production of ratio images from multispectral scanner data is described. The multispectral technique is less affected by variations in atmospheric and solar illumination levels than single-channel scanner imagery of aerial photographs. Another advantage of the multispectral technique is the proportionality between ratios of a target deduced from ratio images, on the one hand, and ratios of reflectances calculated from laboratory spectra of samples from the target area, on the other hand. Several representative ratio images from aircraft and satellite data in the visible, reflective IR, and thermal IR regions are included. The geological applications suggested for ratio scannergrammetry include exploration of construction materials, soils, stratigraphy, volcanic ash flows, beaches, and sand dunes.
Document ID
19740032143
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Vincent, R. K. (Michigan, Environmental Research Institute, Ann Arbor Mich., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1973
Subject Category
Geophysics
Meeting Information
Meeting: Symposium on Management and utilization of remote sensing data