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Record Details

Record 18 of 14866
Radar image processing for rock-type discrimination
Author and Affiliation:
Blom, R. G.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, CA, United States)
Daily, M.(Mobil Oil Corp., Dallas, TX, United States)
Abstract: Image processing and enhancement techniques for improving the geologic utility of digital satellite radar images are reviewed. Preprocessing techniques such as mean and variance correction on a range or azimuth line by line basis to provide uniformly illuminated swaths, median value filtering for four-look imagery to eliminate speckle, and geometric rectification using a priori elevation data. Examples are presented of application of preprocessing methods to Seasat and Landsat data, and Seasat SAR imagery was coregistered with Landsat imagery to form composite scenes. A polynomial was developed to distort the radar picture to fit the Landsat image of a 90 x 90 km sq grid, using Landsat color ratios with Seasat intensities. Subsequent linear discrimination analysis was employed to discriminate rock types from known areas. Seasat additions to the Landsat data improved rock identification by 7%.
Publication Date: Jul 01, 1982
Document ID:
19820055679
(Acquired Nov 30, 1995)
Accession Number: 82A39214
Subject Category: EARTH RESOURCES AND REMOTE SENSING
Document Type: Journal Article
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Mobil Research and Development Corp.; Dallas, TX, United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: GEOLOGICAL SURVEYS; IMAGE PROCESSING; PETROLOGY; PHOTOGEOLOGY; PHOTOINTERPRETATION; RADAR IMAGERY; BANDPASS FILTERS; IMAGE ENHANCEMENT; LANDSAT SATELLITES; SEASAT SATELLITES; TEXTURES
Imprint And Other Notes: (IEEE, AGU, NASA, et al., International Geoscience and Remote Sensing Symposium on Recent Advances in Remote Sensing, 1st, Washington, DC, June 8-10, 1981.) IEEE Transactions on Geoscience and Remote Sensing, vol. GE-20, July 1982, p. 343-351. NASA-supported research.
Availability Source: Other Sources
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