The links posted below are for maps created using ERDAS IMAGINE 2010 software as part of the University of West Florida On-line Geographic Information Systems (GIS) Certification program class, Photo Interpretation and Remote Sensing (GIS4035/L). The links require Internet Explorer to open and display properly.
This module covers satellite based sensors that operate in the visible in infrared wavelengths.
"Features can be identified visually, by looking at the image, but also by examining the histograms under the layer information. Certain features have definite and relatively constant reflective properties and therefore will always fall at a certain spot on the histogram.
In this exercise we examined the reflectance values found in the layer histograms to identify real features on the map." from lecture material
Map of showing shadows on slopes of the Olympic Mountains using false Color Infrared (CIR). I used layers 4, 3 and 2. There was a spike between pixel values 12 and 18.
Map of Lake Tapps with dissolved calcium suspensions which appear as bright blue CIR and Black in layers 5 and 6. There was a spike around the pixel values of 9-11.
Map of Grays Harbor shallow estuary showing basin bottom using the bathymetric combination with layers Red=3, Green = 2 & and Blue = 1.
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