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 total station and the same points generated through the MTLSprocess. The results of that comparison are shown below.1823 Total Number of Points497 Points Below the TIN Surface1325 Points Above the TIN Surface1 Points Equal to the TIN SurfaceSum of the Elevation Difference Squared = 8.8101Average of 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 of 19
Iowa DOT SPR RB22-011 Aug 2012The following is a typical example of a cross section showing the surface resulting from theoriginal Iowa DOT surface and the surface produced through the MTLS process. The resultsof the scanning are very good on the roadway pavement.Page 17 of 19
Page 1 and 2: Final ReportA Comparison of Mobile
Page 3: 1. Report No.RB22-0112. Government
Page 6 and 7: Iowa DOT SPR RB22-011 Aug 2012Contr
Page 8 and 9: Iowa DOT SPR RB22-011 Aug 2012“Cl
Page 10 and 11: Iowa DOT SPR RB22-011 Aug 2012Proje
Page 12 and 13: Iowa DOT SPR RB22-011 Aug 2012Speci
Page 14 and 15: Iowa DOT SPR RB22-011 Aug 2012Scan
Page 16 and 17: Iowa DOT SPR RB22-011 Aug 2012MARS
Page 18 and 19: Iowa DOT SPR RB22-011 Aug 2012Resul
Page 22 and 23: Iowa DOT SPR RB22-011 Aug 2012Surve

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