Wednesday 29 July 2009

Unsupervised Lab

Without a satellite image it made it really difficult to distinguish features in this map. I understand the concept but I think a satellite image may have made this map more accurate.

Wednesday 15 July 2009

Thermal Infrared Image Interpretation


Roads: Roads usually appear lighter because they have a higher radiant temperature and have a greater emission of energy.
Natural and man-made vegetation: Vegetation appearances different because it may be an indication of vegetation health or moisture content.
Sidewalks and Patios: Similar effect observed in roads.
Storage sheds in backyards: Some storage sheds may be reflective and hence emit more energy than a shed that is painted darker.
Automobiles: It depends if the car is in the on position or has recently been turned off. The engine emits energy and hence will show lighter compared to the back portion of the car.
Bright spots on many of the roofs: This could be a chimney or some type of vent that releases heat from the house.

Wednesday 8 July 2009

Lab 2- Multi-Spectral Remote Sensing Systems



Although it is difficult to identify features in the SPOT image, the MSS image in comparison allows for the identification of some features. There is definitely differences in what appears to be vegetation in the second image. It is difficult to distinguish vegetation in the first image, although you can see some areas, particularly in the water show up dark compared to the rest of the image. However, it is virtually impossible to determine vegetation on land. Looking at the second image, vegetation appears blue. You can see clearly the vegetation on land. I think the blue areas in the water may be smaller islands, perhaps mangroves!