UW - Eau Claire Geography 338 Remote Sensing of the Environment

Goal and Background           The purpose of Lab 8 was to learn the prerequisites for correct image classification, that is, to gain experience in measuring and interpreting the spectral signatures of various Earth surfaces an materials. Specifically, spectral signatures will be collected, graphed, and analyzed whether or not they have spectral separability. Methods           In Erdas Imagine, bring in the 2000 Landsat ETM+ of Eau Claire, WI into the viewer. Spectral signatures are going to be collected from twelve different materials. 1. Standing Water (Figure 1) 2. Moving Water (Figure 2) 3. Deciduous Forest (Figure 3) 4. Evergreen Forest (Figure 4) 5. Riparian Vegetation (Figure 5) 6. Crops (Figure 6) 7. Dry Soil (uncultivated) (Figure 7) 8. Moist Soil (uncultivated) (Figure 8) 9. Rock (Figure 9) 10. Asphalt Highway (Figure 10) 11. Airport Runway (Figure 11) 12. Concrete Surface (Figure 12) ...

Goal and Background           The objective for Lab 7 is to offer an understanding and a practice of important photogrammetric tasks on aerial photographs and satellite images. Certain tasks include calculating photographic scales, measuring the areas and perimeters of features, and calculating relief displacement. Lastly, concepts such as stereoscopy and orthorectification will be introduced and implemented with aerial photographs and satellite images. Methods           Lab 7 began with viewing a JPEG of an aerial photograph of the western part of Eau Claire county, which showed a portion of Interstate 94. Measuring the segment AB on the screen, the photo distance is approximately 2.5 inches. The true ground distance of that distance is 8822.47 feet. To calculate the scale of the image, divide the photo distance from the ground distance (S = PD/GD). The image's scale is approximately 1":42,347".         ...