Terrestrial laser scanners datum transformation: insignificant analysis of scale factor
Due to the measurement mechanism employed by terrestrial laser scanners (TLSs), the pre-processing procedure has become crucial procedure to orient all acquired data into global or ground coordinate system. Rather than utilising all seven-transformation parameters, most of TLS practitioners have neg...
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Chulalongkorn University, Faculty of Fine and Applied Arts
2021
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my.utm.940032022-02-28T13:31:04Z http://eprints.utm.my/id/eprint/94003/ Terrestrial laser scanners datum transformation: insignificant analysis of scale factor Abbas, Mohd. Azwan Majid, Zulkepli Mohamad Azmi, Mohamad Aizat Asyraff Chong, Albert K. Mustafar, Mohamad Asrul Lau, Chong Luh Aspuri, Anuar HD Industries. Land use. Labor TA Engineering (General). Civil engineering (General) Due to the measurement mechanism employed by terrestrial laser scanners (TLSs), the pre-processing procedure has become crucial procedure to orient all acquired data into global or ground coordinate system. Rather than utilising all seven-transformation parameters, most of TLS practitioners have neglected the scale factor. Taking into consideration the uncertainties in deriving range data, disregarding the scale factor in datum transformation computation could jeopardise the quality of pre-processed results. To rigorously examine this argument, two experiments have been designed by considering the element of multi distances and multi sensors. Utilising phase (i.e. Faro Focus 3D) and pulse-based (i.e. Leica ScanStation C10) scanners, both experiments were carried out with computation of seven (7) transformation parameters and scale factors were extracted for the assessment. With the aid of statistical analysis, the computed scale factors were mathematically differentiate to the ideal value (i.e. 1.000 or no scale effect). Under 95% confidence level, the null hypotheses for both experiments have indicate an agreement that scale factor can be neglected in datum transformation process for both types of terrestrial laser scanners. Chulalongkorn University, Faculty of Fine and Applied Arts 2021-01 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/94003/1/ZulkepliMajid2021_TerrestrialLaserScannersDatum.pdf Abbas, Mohd. Azwan and Majid, Zulkepli and Mohamad Azmi, Mohamad Aizat Asyraff and Chong, Albert K. and Mustafar, Mohamad Asrul and Lau, Chong Luh and Aspuri, Anuar (2021) Terrestrial laser scanners datum transformation: insignificant analysis of scale factor. Engineering Journal, 25 (1). pp. 253-262. ISSN 0125-8281 http://dx.doi.org/10.4186/ej.2021.25.1.253 DOI:10.4186/ej.2021.25.1.253 |
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HD Industries. Land use. Labor TA Engineering (General). Civil engineering (General) Abbas, Mohd. Azwan Majid, Zulkepli Mohamad Azmi, Mohamad Aizat Asyraff Chong, Albert K. Mustafar, Mohamad Asrul Lau, Chong Luh Aspuri, Anuar Terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
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Due to the measurement mechanism employed by terrestrial laser scanners (TLSs), the pre-processing procedure has become crucial procedure to orient all acquired data into global or ground coordinate system. Rather than utilising all seven-transformation parameters, most of TLS practitioners have neglected the scale factor. Taking into consideration the uncertainties in deriving range data, disregarding the scale factor in datum transformation computation could jeopardise the quality of pre-processed results. To rigorously examine this argument, two experiments have been designed by considering the element of multi distances and multi sensors. Utilising phase (i.e. Faro Focus 3D) and pulse-based (i.e. Leica ScanStation C10) scanners, both experiments were carried out with computation of seven (7) transformation parameters and scale factors were extracted for the assessment. With the aid of statistical analysis, the computed scale factors were mathematically differentiate to the ideal value (i.e. 1.000 or no scale effect). Under 95% confidence level, the null hypotheses for both experiments have indicate an agreement that scale factor can be neglected in datum transformation process for both types of terrestrial laser scanners. |
format |
Article |
author |
Abbas, Mohd. Azwan Majid, Zulkepli Mohamad Azmi, Mohamad Aizat Asyraff Chong, Albert K. Mustafar, Mohamad Asrul Lau, Chong Luh Aspuri, Anuar |
author_facet |
Abbas, Mohd. Azwan Majid, Zulkepli Mohamad Azmi, Mohamad Aizat Asyraff Chong, Albert K. Mustafar, Mohamad Asrul Lau, Chong Luh Aspuri, Anuar |
author_sort |
Abbas, Mohd. Azwan |
title |
Terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
title_short |
Terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
title_full |
Terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
title_fullStr |
Terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
title_full_unstemmed |
Terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
title_sort |
terrestrial laser scanners datum transformation: insignificant analysis of scale factor |
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Chulalongkorn University, Faculty of Fine and Applied Arts |
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2021 |
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http://eprints.utm.my/id/eprint/94003/1/ZulkepliMajid2021_TerrestrialLaserScannersDatum.pdf http://eprints.utm.my/id/eprint/94003/ http://dx.doi.org/10.4186/ej.2021.25.1.253 |
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