Mod 5, Unclassified

I've emailed copies of both classified and unclassified to Trisha. I don't know why this is happening, but my colors are reversed when I upload the images to the blog. There isn't text, title, north arrow, or scale either. I'm uncertain why this is happening, but I've spent the last 20 minutes trying different ways to do it. Please grade the emailed images!

Mod 5, Classified

Mod 4

By utilizing image rectification, an analyst can take an image that does not have projection info, and effectively lay it over another image that has a stated projection. While modern imagers (even consumer cameras) have the ability to add GPS data to an image, this is a new technology. The ability to rectify any image can aid historical research projects. Areal photographs taken from airplanes or hot air balloons can now have projection info added to them. This will allow researchers to accurately study an area for changes to agriculture or wilderness or to determine old property lines.

There is also the possibility to inaccurately rectify an image, either through a lazy analyst or poor image quality. If this is done, decisions can be made that are based on data that is inaccurate and therefore misleading. Caution would be needed, as well as other outlets of information, in order to make informed decisions based on image rectification.

Mod 3

Roads—Road are retaining more heat from the previous day compared to the surrounding area, hence the lighter color.

Natural and man-made vegetation—The vegetation has lost a lot of heat as it does not retain as much thermal energy throughout the evening.

Sidewalks and patios—Like the roads, they are a lighter color, but not as light as the road. This is likely due to both size and use, as vehicle to road friction may heat up the roads even more.

Storage sheds in back yards—The storage sheds are darker in color as they are likely not insulated buildings nor do they have air conditioning or heating. Because of this, they are more prone to mimic the ambient air temperature which is 12º C, therefore appearing darker.

Automobiles—Being metallic, automobiles are mostly darker. Like the storage sheds, they are neither insulated nor temperature controlled (at least not when the vehicle is parked). Therefore, they will also appear darker.

Bright spots on many of the roof tops—These are likely vents on the roof for stoves or dryers. As they produce a lot of heat, they will appear lighter in color.

Mod 2

The use of the multi-spectral image allows quick and easy distinction between vegetation, water and urban areas. The blue vegetation appears to be plant growth on islands in the southern half of the image. In the northern half, there appears to be blue vegetation growth in urban parks or backyards. If you were looking to obtain sites for urban areas, the panchromatic image may be better as they stand out. You would have to be careful when using the images for making boundaries, though, as the sand in the panchromatic also appears very light in color. This could make beach-front residence difficult to determine.