GIS 4035 Module 10: Supervised Classification
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3y ago
This mission for this Lab was to be able to use ERDAS to create, analyze, and edit supervized classifications of multispectual images. The initial sets had us walking through the process of reviewing the fundamentals of the signature editor tool. we also used the inquire tool to located specific points on the image to be used as the signature class. These tools allowed us to be more precise on ensuring out classifications. We then moved onto out own supervised classification of an image of Germantown, Maryland given coordinates of certain features.  ..read more
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GIS 4035 MODULE 9: UNSUPERVISED CLASSIFICATION
Michael's Course Blog
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3y ago
In this lab we focused on using unsupervised classifications of imagery, and unsupervised classification take basic commands from the user like the number of catedories and creates categories based on the look of each pixel. In this lab we used both ArcMap and Erdas Imagine software to re classify fifty categories into only five trees, grass, buildings/roads, shadows, and mixed of grass and urban.  ..read more
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Module 8 Lab: Thermal & Multispectral Analysis
Michael's Course Blog
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3y ago
This weeks exercise we learned to exclaim a feature in map. In my map I chose to represent hot spots caused by fires. I did this by selecting a color band combination that would make that feature stand out. Red 7, Green 5, Blue 4 band combination was best to show the orange color of the fire against the cooler colors of the surrounding map.  ..read more
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GIS 4035 Module 7: Multispectral Analysis
Michael's Course Blog
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3y ago
10/24/17 10/24/17 This week we used ERDAS to practice using several methods of multispectral data analysis to find 3 different features with different EMR. We used histogram and munipulation analysis as well as different displays of combinations creating indices of different bands. This was a good lab to practice the use of histograms and manipulating them for image quality. You can see above my 3 multispectral analysis ..read more
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GIS 4035 Module 6: Spatial Enhancemnet
Michael's Course Blog
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3y ago
In this lab we where introduced to some of the way to correct images. We learned how to explore the tools available in both ERDAS and ArcMap. This Included Fourier transformations, high pass filters, and low pass filters. We learned in the lab that High pass filters create a high contrast and noisy output that highlights the edges of features. we also learned that Low pass filters generate a smoother and less detailed output then the original image. In order to achieve an image like this we experimented with wedge placement tools and and sharpen filters. I was able to enhance the original ima ..read more
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GIS 4035 Module 5a: Introduction to ERDAS Imagine and Digital Data
Michael's Course Blog
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3y ago
This weeks lab we learned about the details of the electromagnetic spectrum and its relationship between energy frequency and wavelength. We also went into some equations on how to calculate each. This was a brief discussion to help us understand the structure of the electromagnetic spectrum and the type of data we can get from unique wavelengths. Also this week we learned how to use ERDAS Imagine program which allowed me to generate the map above by importing it back into Arcmap. It was nice to have a change of scenery from Arcmap and I hope we continue to use/learn new software in order t ..read more
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Module 4 Lab: Ground Truthing and Accuracy Assessment
Michael's Course Blog
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3y ago
On this weeks lab of Aerial Photo Interpretation and Remote Sensing we where asked to check for accuracy of our week 3 lab. We utilized google maps to accurately confirm classifications of 30 systematically placed sites. We did this by using google maps street view to zoom directly on the sites and to confirm the area for its proper classification. The accuracy of my map came out to be 96.67% accurate. This was really not to bad considering we were given an areal photo and asked to classifly the locations with just that. I believe that this will help me in my future labs to further improve &n ..read more
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Lab 3: LU/LC Classifications
Michael's Course Blog
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3y ago
This weeks Lab for Photo Interpretation and Remote Sensing we where required to classify an aerial photo on its land use and its land cover. We had to classify every area of the map as you can see above but were not required to get into major detail. Each one of the covered areas are represented in the legend with its distinct color and on the map with its distinct code number.  This lab was not difficult but very time consuming when it cam to using the polygons to trace around each area ..read more
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GIS 4035 Module 2: Visual Interpretation
Michael's Course Blog
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3y ago
This was the first Lab to introduce ourselves with basic photo interpretation. These first two exercises focused on the essential foundations we need to carry throughout this course. The maps above show the basic interpretations of various tone and textures and well as identifying key features in an aerial photograph. In the first map we were required to identify 5 different tones from very light through very dark and 5 different identifications from very fine through very coarse. We continued to identify the photo from shape and size, shadows, patterns, and associations. It was a good expe ..read more
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Week 1 Photo Interpretation and Remote Sensing
Michael's Course Blog
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3y ago
Hello everyone! I have already completed the own your own map during my last class but I have re-posted my blog here; The propose for this Lab was to show us how to create a professional looking map, locate commonly used tools and reference GIS metadata within the ArcGIS Software. As well as showing us how to understand the difference between relative and absolute paths in map files.  I was able to own my map by selecting unique and purposeful cartographic choices.   I chose a layout that was easy to understand and pleasing to the eyes where I didn’t have objects overburdenin ..read more
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