Quality Control of Deliverables

Review compiled planimetric and topographic data for completeness and accuracy. As each stereo model is collected, a final TIN will be run at the stereo plotter. This insures that a sufficient number and proper location of breaklines and spot elevations have been collected. Once the data is received at the edit stations, a TIN will be run and inspected. When it passes control checks a contour will be generated from the original elevated data. A smoothing algorithm is used to generate aesthetically pleasing contours. One advantage of ATLAS/DTM is the ability to view both smoothed and raw contours simultaneously. Obviously, this quality control check is essential in producing pleasing yet accurate contours. The final DEM file is used to generate the ortho corrected image. Very few errors should exist in the data at this time because of the inherent checks in the data capture process and the quality control procedures already performed.

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