Module 8: Thermal & Multispectral Analysis

This week we continued to build on our photo analysis skills. The focus was thermal and multispectral analysis. We were able to create composite images in both ERDAS and Arcmap, interpret thermal infrared data, and we were able to continue working on band combinations. For this particular lab we had to choose one feature to display within the image provided. The bridge that decided to feature was displayed with a band of Red (Layer 6), Green (Layer 5), and Blue (Layer 4). You could notice the bridge going across the rivers. The small strip of pavement must provide enough thermal heat next to the water to create a great visual.

GIS 4035 Module 7: Multispectral Analysis

This week we learned several new techniques when it comes to multispectral analysis. We learned histograms, spectral characteristics, using the unique cursor, and using gray scale. We then tied all of our skills together to determine the best band combinations.

 The purpose of this lab was to determine 3 features using different band combinations.  Each map listed below has the explanation of each image and band combination. This lab was very interesting and I enjoyed learning how to change the image quality to display certain features.

Module 6: Spatial Enhancement

This weeks lab allowed us to get creative and start using the skills that we had learned. We were able to use newly acquired tools to make corrections to images that may have imperfections or errors. We were able to use both Erdas and Arcmap to utilize tools to enhance an image. One of the new tools that we learned how to use was the Fourier Transformation. We were able to use that to take the major striping errors out of the image. We also used high pass and low pass filters to make the image clearer. I was able to experiment a lot in this lab and learned many new skills that I will be able to utilize in the future.

Lab 5a: Intro to ERDAS Imagine and Digital Data 1

This week we began with some calculations of in relations to wavelength, frequency, and energy of EMR. I was also introduced to Erdass Imagine. The lab walked us through some of the basics of the program. We used the new program to create a subset image or map using a classified image of a section of forested lands in Washington State. I found some similarities of the program that made it easy to adjust. We then uploaded the subset image to ArcMap to complete our map. I found this week very interesting and I am looking forward to building on what I learned.