Change Detection

Tuesday, October 25th , 8:00 A.M.- Noon
Location: TCEQ Computer Training Lab
Taught by:
Frank Obusek, Hexagon
Performing the seemingly simple “change detection” is rarely simple, largely due to a poor understanding of the problem and non-realistic result expectations derived from available geospatial data and the multiple software applications required to process the data. The solution to this problem is to understand the required data inputs, the step-by-step workflow for specific end-users and how to implement a complex analysis in an intuitive process. In this interactive lecture workshop attendees will explore at least three different workflows to identify areas of change. Both image and vector data with will be used in workflows that consist of zonal likelihood, discriminate function and customized spatial modeling. These workflows will be executed using ERDAS IMAGINE remote sensing software.

Prerequisites: Basic understanding of raster image data, image processing and image classification.

Platinum Sponsors

appgeo logo and link to website Esri logo and link to website Harris Corporation logo and link to website

Gold Sponsors

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Silver Sponsors

Survey Aerial and Mapping LLC logo and link to website Surdex geospatial logo and link Infogroup geospatial logo and link Digitial Media Warehouse logo and link Hexagon logo and link Fugro logo and link SCAUG logo and link Geocomm geospatial logo and link HP geospatial logo and link


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  • Western Data Systems
  • Austin Community College
  • TeachMeGIS
  • RazorTek Inc
  • Tessellations Incorporated
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  • Smith Map Studio
  • Latitude Geographic
  • West – Safety Services