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Remotely Sensed Imagery and Color Composites
a Band 4: Near infrared (0.76 to 0.90 ␮m)
a Band 5: Middle infrared (1.55 to 1.75 ␮m)
a Band 6: Thermal infrared (10.4 to 12.5 ␮m)
a Band 7: Middle infrared (2.08 to 2.35 ␮m)
Also, Landsat TM imagery is 30-meter spatial resolution (except for the thermalinfrared band, which is 120 meters). Thus, each pixel you will be examining
represents 30 meters square.
Localizing This Lab
Although this lab focuses on a section of a Landsat scene from northeast Ohio,
Landsat imagery is available for download via GLOVIS at http://glovis.usgs.
gov. This will provide the raw data which will have to be imported into MultiSpec and processed to use in the program.
Alternatively, NASA has information for obtaining free Landsat data for
use in MultiSpec online at http://change.gsfc.nasa.gov/create.html. The
page provides step by step instructions for acquiring free data for your own
area and getting it into MultiSpec format.
10.1 MultiSpec and Band Combinations
1. Start MultiSpec.
MultiSpec will start with an empty text box (that will give you updates
and reports of processes in the program). You can minimize the text box
for now.
2. To get started with a remotely sensed image, select Open from the File
pull-down menu. Alternatively, you can select the Open icon from the
toolbar:
3. Navigate to the ‘Chapter10’ folder and select ‘cle.img’ as the file to open
and click Open.
4. A new dialog box will appear that allows you to set the display
specification for the ‘cle’ image.
(Source: Purdue Research Foundation)