Final Report A Comparison of Mobile Scanning to a Total Station ...
Final Report A Comparison of Mobile Scanning to a Total Station ...
Final Report A Comparison of Mobile Scanning to a Total Station ...
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Iowa DOT SPR RB22-011 Aug 2012A comparison was done between 1823 points on the pavement that were surveyed byIowa DOT staff using a <strong>to</strong>tal station and the same points generated through the MTLSprocess. The results <strong>of</strong> that comparison are shown below.1823 <strong>Total</strong> Number <strong>of</strong> Points497 Points Below the TIN Surface1325 Points Above the TIN Surface1 Points Equal <strong>to</strong> the TIN SurfaceSum <strong>of</strong> the Elevation Difference Squared = 8.8101Average <strong>of</strong> Elevation Difference Squared = 0.0048Root Mean Square Error = 0.0695National Standard for Spatial Data Accuracy (NSSDA) = 0.1363Points PASS the 95% confidence test based on 1.96 Chi Square Value.The difference in the 1823 points compared is shown below.Page 16 <strong>of</strong> 19
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