Research Papers

Comparing remotely sensed Pictometry® Web-based height estimates with in situ clinometer and laser range finder height estimates

[+] Author Affiliations
Daniel R. Unger

Stephen F. Austin State University, Arthur Temple College of Forestry and Agriculture, Nacogdoches, Texas 75962-6901, United States

I-Kuai Hung

Stephen F. Austin State University, Arthur Temple College of Forestry and Agriculture, Nacogdoches, Texas 75962-6901, United States

David L. Kulhavy

Stephen F. Austin State University, Arthur Temple College of Forestry and Agriculture, Nacogdoches, Texas 75962-6901, United States

J. Appl. Remote Sens. 8(1), 083590 (Jul 17, 2014). doi:10.1117/1.JRS.8.083590
History: Received November 20, 2013; Revised May 19, 2014; Accepted June 27, 2014
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Abstract.  Heights of 30 light poles were measured with a telescopic height pole. Clinometer and laser range finder in situ estimated light pole height was compared to Pictometry® estimated light pole height using hyperspatial 4-in. (10.2-cm) multispectral imagery within a Web-based interface. Average percent agreement between light pole height and clinometer and laser range finder estimated that light pole height ranged from 3.97% to 3.79% for clinometer and laser range finder estimated light pole height, respectively. Average percent agreement between light pole height and Pictometry® estimated light pole height at image magnification factors of 100%, 125%, 150%, 200%, and 300% magnification ranged from 1.77% to 2.39%. Root-mean-square error (RMSE) between light pole height and clinometer and laser range finder estimated that light pole height ranged from 0.22 to 0.20 m for clinometer and laser range finder estimated light pole height, respectively. RMSE between light pole height and Pictometry® estimated light pole height ranged from 0.10 to 0.14 m. An analysis of variance between absolute errors of light pole height estimate by different techniques indicated that Pictometry® was significantly more accurate than both clinometer and laser range finder light pole height estimates.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Daniel R. Unger ; I-Kuai Hung and David L. Kulhavy
"Comparing remotely sensed Pictometry® Web-based height estimates with in situ clinometer and laser range finder height estimates", J. Appl. Remote Sens. 8(1), 083590 (Jul 17, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.083590


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