Evaluation of photogrammetric measurements obtained using imaging rovers and imaging theodoli

Evans, Jesse Troy (2015) Evaluation of photogrammetric measurements obtained using imaging rovers and imaging theodoli. [USQ Project]

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Abstract

Recent improvements in electronics have allowed instrument manufactures to incorporate new digital technologies into traditional surveying equipment. The photogrammetry process has been streamlined by integrating digital cameras with electronic theodolites and rovers, allowing measurements to be taken using a pair of photographs. With the addition of advanced software, terrestrial photogrammetry is now an alternative option of data collection for the modern industry professional. However, when using new equipment there are always concerns over the accuracy of measurements.

The main objective of this dissertation is to evaluate what effects different geometrical parameters have on measurement accuracy, and to provide recommendations for the appropriate operation of the imaging technology. Parameters to be considered include target-baseline distance, intersection angle, photo resolution, and number of photo stations used in a solution. A Trimble S6 imaging theodolite and a Trimble V10 imaging rover were used in a series of investigations to test the parameters under typical field conditions.

The study found that the Trimble S6 imaging theodolite was capable of producing survey quality measurements across a broad parameter range, while the Trimble V10 imaging rover lacked measurement accuracy. Recommendations for the effective and reliable use of the imaging technology include using the S6 imaging theodolite up to a target-baseline distance of 50m, centring the intersection angle about the 70°-90° angle, using the best image resolution available, and using a minimum number of 3 photo stations for measurement solutions. Ultimately, the accuracy of any measurement performed using this technology will depend on a combination of correct instrument operation and the understanding of limitations.


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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Spatial Science (Honours) project.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Supervisors: Liu, Xiaoye
Date Deposited: 01 Jun 2016 04:27
Last Modified: 01 Jun 2016 04:30
Uncontrolled Keywords: Imaging Total Station, Terrestrial Photogrammetry, V10 Rover, Imaging Theodolite
Fields of Research : 09 Engineering > 0909 Geomatic Engineering > 090905 Photogrammetry and Remote Sensing
URI: http://eprints.usq.edu.au/id/eprint/29203

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