Spatial Enhancement & Multispectral Analysis
In the lab, we learned how to apply spatial enhancements, perform a multispectral analysis, and create band indices. We also observe significant differences and improvements to imagery. Used a grayscale symbology to analyze pixel values spikes between 12-18. Bodies of water are represented by the darkest shade (black). Explored a focal statistic with a 3x3 kernel to see what changed. Lines are much sharper and in areas in the image where urban areas are present the buildings seemed to be outlined in lighter shades. This kind of imaging can be replicated simply using RGB values of 5, 4, 3, and pixel values between 12-18 in band 4 within ERDAS Imagine. Within True color imagery, urban areas and snow is represented by white and/or pale coloring. Then exploring if the same coloration will apply for another display of band colors. Despite having high pixel values within bands 1-4 and bands 5 and 7 are with the lower values. RGB values 1, 3, and 4 highlight snow and urban areas' similar...