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Production has begun on one of the largest ZI/DMC projects in the United States.

For this project, BHI will be providing natural color orthophotography and an autocorrelated 2-foot surface. The TXDOT 17 Project is being funded by the Texas Department of Transportation in association with the North Central Texas Council of Governments (NCTCOG). The project area comprises 12,092 square miles, encompassing 17 counties in the north central area of the state of Texas. Ground control was laid out by the Dallas, Texas survey office of BHI in conjunction with Lina T. Ramey and Associates and TXDOT. To ensure a high quality orthophoto project; 3001 Inc. and PhotoScience acquired the imagery within a 45 day time frame using two ZI DMC cameras to maximize exposures during peak zenith angles. The flight plan was designed to achieve a nominal ground pixel resolution sufficient for developing 6 inch pixel orthophotography without oversampling.

At completion of the project, over 65,000 frames of imagery will be processed to produce natural color orthophotography at a hal foot pixel resolution. The automated Digital Elevation Model (DEM) will be developed from the 2007 digital aerial stereo photography with 8 foot point spacing and to National Map Accuracy Standards (NMAS) for a 2.0 foot contour interval. The data will be processed to bare earth and then brought into MicroStation Design files and edited to ensure an accurate surface model.
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Bohannan Huston provides civil engineering, spatial data, laser scanning, and related advanced technology services. We service organizations in Albuquerque and Las Cruces, New Mexico, Dallas, Texas and Denver, Colorado.