Module 7 - Performing Multispectral analysis and using the NDVI (index) to enhance specific image features

Both the exercises and the final lab were pretty interesting as they gave us insights in how to utilize the multispectral tab, NDVI creation and the use of the panchromatic tab as well as using histograms and adjusting the breakpoints and LUT (visible brightness on screen) Histogram; also worth mentioning is the Discrete Data button which will automatically adjust breakpoints to create a balanced histogram which produces good results for most but not all situations.  We also experimented using a few the tools found in ArcMap, but after a bit of fiddling with ERDAS, I find that I preferred it over ArcMap.  For our lab we were given three distinct features to locate by using the inquiry button and observing pixel values.  Once each feature was located we applied what we learned in the exercises and then created a subset & chip of the area after selecting the optimum band combination for each map.  Although some maps could have used the same band combination we were asked to use three distinct band combinations, one for each feature.  Below are the maps I produce in Arcmap based upon the multispectral analysis performed in ERDAS.