This week we learned the concept of band ratios, vegetation assessment using NDVI, more false color composites, and examining more imagery from cloud cover.
These maps right here look very unimpressive, but I actually did a lot with them. For the pansharpened false color image, I mixed the 1 meter nominal spatial resolution of LANDSAT imagery and sharpened it to 30 meters nominal spatial resolution. The second image is normal color non-pansharpened.
The aim of this blog is to chronicle the evolution of the maps that I'll be designing while earning my A.S. degree in GIS/Geography.
June 30, 2016
June 9, 2016
Color composites
This week we worked with multi spectral imagery captured by different sensors, knowledge of the electromagnetic spectrum, and normal vs false color composite imagery.
This here is a simple looking map, but what I did was create two different composites. The top one is normal color whereas the bottom one is false color.
This here is a simple looking map, but what I did was create two different composites. The top one is normal color whereas the bottom one is false color.
June 1, 2016
Georeferencing
This week we learned how to work with images, namely reduce noise with smoothing techniques and using gamma, contrast, brightness. We also learned about light energy and albedos.
This map here isn't very impressive, but it isn't meant to be. The assignment here was to georeference the above map without a coordinate system. We did this by selecting control points. I used NAD 1983 UTM North 15. The control points I chose were at the top tip that looks like it is meeting a triangle, and the highway at the bottom. Areas that are very distinct that I can see close up.
This map here isn't very impressive, but it isn't meant to be. The assignment here was to georeference the above map without a coordinate system. We did this by selecting control points. I used NAD 1983 UTM North 15. The control points I chose were at the top tip that looks like it is meeting a triangle, and the highway at the bottom. Areas that are very distinct that I can see close up.
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