kernjm_lab7.pdf - Jen Kern Geospatial Lab 7 Remote Sensing Jen Kern Jen Kern Q1 The red color gun held the NIR band from.85 to.88 micrometers The green

kernjm_lab7.pdf - Jen Kern Geospatial Lab 7 Remote Sensing...

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Jen Kern Geospatial Lab 7 Remote Sensing
Jen Kern
Jen Kern Q1 The red color gun held the NIR band, from .85 to .88 micrometers. The green gun held the red band, from .64 to .67 micrometers. The blue gun held the green band, from .53 to .59 micrometers. Q2 The image looks strange because Near Infrared is being displayed. As a result, red and green are being expressed in other guns as well. But largely, the portrayal of Near Infrared radiation is what is causing the image to look abnormal. Q3 The water looks black, while the vegetated areas look red and the urban areas are a light teal or green color. Q4 In the 4-3-2 combination, colors are conveyed as they would be to the naked eye. This composite is a true color composite, where each gun is holding its respective band (e.g. the red band is placed in the red color gun). Q5 True color composites are not as useful for certain purposes. A 5-4-3 combination, for example, displays NIR which is helpful in determining the health of vegetation. Furthermore, true color composites fail to show other things the naked eye can’t see - such as thermal energy.

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