Thermal and Multispectral Analysis

Thermal imaging takes advantage of the thermal layer (band 6).  This thermal layer is intensified visually the higher the temperature of an object.  The image below is displayed using RGB layers 5,7,3.  The bright yellow indicates the fire and the bluish hue indicates the smoke.  The black object just northeast of the fire is a lake.

Multispectral Analysis

I hope I got these right.  This week we worked with multispectral analysis.  By adjusting color bands and contrast, we can better see variations of color which can further assist in our analysis of the image and the features that are present.

Gray scale image with Layer_4 enhanced shows the brightest spots on the image

Multispectral image with enhanced layers

High contrast between two bodies of water

Spatial Enhancement

Remote sensing covered the topic of spatial enhancement and the different methods/filters by which spatial enhancement can be achieved.   The deliverable below was created using a number of tools ERDAS Imagine including the Fourier transform editor to remove striping lines created by a faulty LANDSAT 7 satellite.  The Convolution filter was used to sharpen the image further.  That sharpened image was then opened in ArcMap where the Focal Analyst tool was used to create a more blended image without compromising the image itself.

Network Analyst - Report Week

This week we finished up our project on Network Analysis and were asked to share a couple of the maps we created.  I chose a couple of gray scale maps that were created for use by supply route drivers during a hurricane.  Each route was created last week using data that had been prepared the previous week.  I can see a lot of applications for network analysis.  Any industry that travels from point A to point B can utilize this tool.  The use of restrictions allows for routing around obstacles like road blocks or flood zones. Both map depict a multi-turn route from the armory to the selected shelter.  Orientation of the map and eye flow of the directions are important things to keep in mind.  You don't want your driver to be scanning the page looking for his or her next turn.

Network Analysis - Analyze Week

This week we worked with Network Analysis.  Now, this is something I understand.  On a daily basis, I work with network analysis, however instead of road, I am analyzing power lines and everything attached to them.  Using Network Analysis tools in ArcMap, I have created routes for use in an emergency situation should a hurricane approach Tampa.  The flood zone that was created last week was used a restriction attribute when creating the routes from the armory to the the shelters.

Network Analysis

Introduction to ERDAS Imagine

This week we took our first look at ERDAS Imagine.  Definately a lot of setup involved with this program.  Sometimes that's a good thing, sometimes not.  It's good if you know what you are doing.  As with any program, time and experience will make this program as easy to use as any other.  

Network Analysis Prepare Week

This weeks module has us preparing data to be used for Network Analysis of Tampa area streets to be used for hurricane evacuation routes.  Below is the base map that I created for this week.  I didn't show all of the streets for aesthetic reasons, but I will be using them all during the analysis phase of the project.