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1. 

1. Obtain Satellite Imagery with Finer than 5x5 Meter Spatial Resolution

This was one of the most important aspects of this project.  The project was designed to be specific to High Resolution Satellite Imagery.  Areas equal to one acre would be very difficult to classify using traditional LandSat imagery at 15 meter resolution.

 

2. Perform a Supervised Classification with 15 or More Classes.  Bare, Vacant Ground is the  Class of Most Importance.  Create an Error Matrix to Determine Accuracy.

This was the most crucial portion of the project.  Without an accurate classification, the areas identified for infill development would not mean anything.  Great care was taken at this stage to ensure the highest degree of accuracy possible.  Even with this being the case, the error matrix for this project only showed 70% overall accuracy.

 

3. Use the Swipe Feature to Visually Ground Truth Possible Infill Development Sites.

The Swipe Feature proved to be a very valuable tool for the ground truthing section of this project.  All of the ground control points for input in the accuracy assessment section came from the IKONOS image itself.  With out the Swipe Feature it would have been difficult to determine was the actual land cover current was.

 

4. Use the VirtualGIS 3D Viewer and  Navigate to the Site for Final Inspection.  Slope Aspect Becomes Very Apparent.

VirtualGIS and the 3D aspect of this project was very appealing as well.  3D urban modeling is becoming an important visualization tool today.  This project provided and opportunity to learn about Erdas's VirtualGIS and ArcGIS ArcScene.  These 3D visualizations also provided further information about the project.  Without this information it would have been very difficult to tell the slope and suitability of the land.

See Fly Through

 

5. Create a List of Possible Sites and Present to City Officials or Developers