Thursday, July 2, 2009

Module 2 Lab -Spot Panchromatic & SPOT Multispectral





Compare the SPOT panchromatic image and the multispectral mode display. Note any difference?
The two obvious differences are the color and resolution. The Pan image is a single band image (band 1) and the Multispectral image, like the name suggests, incorporates three spectral bands (bands 4,3,2). The Panchromatic image is at 10 meter ground resolution and the Multispectral image has a resolution of 20 meters. The displays also differ in their pixels per line values. Spot Panchromatic has 6,000 pixels per line and the Multispectral has 3000. The Panchromatic displays higher resolution and pixels per line producing a sharper image.









































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