Module 1 - Visual Interpretation

    This week was the start of the next class and lab, Photo Interpretation and Remote Sensing. 

    This being the first lab, it was an overview of the class as well as learning Visual Interpretation. Which had us identifying tone and texture, identifying features, and interpreting color.

    For identifying tone and texture, we observed the now completed map below. When we first viewed the map, we were asked to make polygons for the tone of the map. This is because while the map is black and white, we can see the gradient that the map has in these two colors. Where it goes from very light, light, medium, dark, and very dark. So, in the lab we viewed the map and chose areas that we believe are the tones we were asked to find. We next did the same with texture, searching for areas on the map that were very fine, fine, mottled, coarse, and very coarse. Which you can see in the image below. I felt somewhat confident in my ability to identify the tones and textures.

    Next was identifying features, which we observed on the other map you can see below. This exercise was more about identifying features visually by their size and/or shape, shadows, pattern, and association. You can see below that for size and/or shape I noted the intersection, row of cars, and household. These were objects I could easily identify in their shape and size. Next was shadows, which you can see I noted the water tower, palm trees, and condo buildings. This was more about observing the features shadows than the actual feature. Following that was pattern, where I noted the beach parking lot, the motel parking lot, and the housing subdivision. These were features identified for their pattern, as they had common features that made a pattern. Lastly, you can see the features I noted by association, these being the beach pier and the motel pool. These are identifiable because of the area they are in and the other features that make up the whole map. I felt very confident with this map, where objects were more easier to view. 

    Lastly was interpreting color, which had us view a true color map and a color infrared (false color) map. This exercise had us plot points on the map and not their color. Which was important as when we switched to the false color map, they would be different. This allowed us to compare the two and see how a false color map compares. As most grass features and trees that were green become red in the false color map. I feel like I have an okay grasp on color infrared, but I hope to learn more about it through the class. 

    With the first week done, I feel confident that I can and will grow more with GIS.






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