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Munsell color analysis of Landsat color-ratio-composite images of limonitic areas in southwest New MexicoThe causes of color variations in the green areas on Landsat 4/5-4/6-6/7 (red-blue-green) color-ratio-composite (CRC) images, defined as limonitic areas, were investigated by analyzing the CRC images of the Lordsburg, New Mexico area. The red-blue-green additive color system was mathematically transformed into the cylindrical Munsell color coordinates (hue, saturation, and value), and selected areas were digitally analyzed for color variation. The obtained precise color characteristics were then correlated with properties of surface material. The amount of limonite (L) visible to the sensor was found to be the primary cause of the observed color differences. The visible L is, is turn, affected by the amount of L on the material's surface and by within-pixel mixing of limonitic and nonlimonitic materials. The secondary cause of variation was vegetation density, which shifted CRC hues towards yellow-green, decreased saturation, and increased value.
Document ID
19860029347
Document Type
Conference Paper
Authors
Kruse, F. A. (U.S. Geological Survey Denver, CO, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Funding Number(s)
CONTRACT_GRANT: JPL-956208
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other