Josh Little
Geog. 342
12/13/10
Executive Summary
For my project, I chose to complete three Feature Analyst Tutorials and to
document the methods, findings, and results. I decided that I would like to compare and
contrast the extraction methods for different objects. This led me to run through Lesson
2: Airplanes Extraction, Lesson 3: Urban Streets Extraction, and Lesson 10: 3D
Building Extraction. The lessons covered a few small areas from around the country
that contained the data required for each extraction type. I anticipated that this project’s
final result would be a better understanding of the Feature Analyst extension and its
tools, which would lead to an increased knowledge of the different procedures and tricks
for getting good extractions from different objects.
Feature Analyst Tutorial
Lesson 2: Airplanes Extraction
In this lesson, the target features were all airplanes on a tarmac. The tutorial
began by reviewing the pitfalls involved in drawing a bad training set and the importance
of drawing good training sets to achieve the results wanted from feature extractions. I
then reviewed the custom parameters associated with the Set up Learning dialog box.
In the final exercise, I converted my polygon results to point results. This was all done
while working within a geodatabase.
Feature Analyst Tutorial
Lesson 3: Urban Streets Extraction
In this lesson, the target features were roads within an urban environment. I ran
an extraction for urban streets, ran clutter removal with custom learning settings,
converted the polygon results to lines, and then repaired the intersections using the
Repair Intersection tool from the Feature Analyst toolbar.
Feature Analyst Tutorial
Lesson 10: Extract 3D Buildings
In this lesson, I extracted suburban houses with the assistance of the elevation data file
provided and the Digital Elevation Model (DEM) associated with the reflectance image. I
then used Post Processing to square up the building features for an improved
appearance. I also had to troubleshoot within ArcScene to view the extracted 3D
buildings.