SO503, Spring 2009
Hyperspectral Imagery Lab
Insure that you are running version 2010.4.1 of MICRODEM. Update it if necessary and make sure you have the April Fool's version of the help file.
Also insure there is a directory c:\mapdata\spectral_library on your computer; if not download the USGS spectral library data set. Some of these spectra cover only the NIR part of the spectrum.
We will do this lab in 8 groups of 2 (two groups will do each of the 4 areas; section leader coordinates). Two groups will do each of the three areas (Moffett Field, Japser Ridge, and Cuprite). Each area has several RFL files (sequential images along the flight line), and each group will use a different RFL file.
Go to http://aviris.jpl.nasa.gov/html/aviris.freedata.html and download one of the reflectance data sets, and download it to the c:\mapdata\aviris directory.
Uncompress the file. It uses Unix compression, and MICRODEM can handle it. The file is probably compressed in two steps, first TARed and then GZipped, and you uncompress in the reverse order.
You are to prepare a brief PowerPoint briefing on the area, and what the hyperspectral imagery shows.
Discuss the advantages and challenges of hyperspectral data, and why you need a variety of techniques to look at this data. Have a slide showing what you can see with each technique.
Try to match the reflectance spectrum at several points with the USGS spectral library.
What happens at around band 110 and 160? Discuss this in terms of both the hyperspectral cube and a reflectance spectrum.