Abstract
Rapid, direct and dense three-dimensional (3D) data acquisitions have become compulsory requirement for most applications that demand complete 3D information. Though, it is impossible to obtain data that cover the whole surface of the object from single sensor position. In terrestrial laser scanner (TLS) measurement, this multi positions issue was resolved using similarity transformation. However, only six (6) parameters were employed while scale factor was neglected. Since TLS measurement were utilised in many applications especially that demand high accuracy data, thus, further study is necessity to ensure the significant of neglecting scale factor in TLS datum transformation. Utilising robust experiment which involves with multi network configurations and multi distances, all seven (7) parameters were computed and scale factors were extracted for the further assessment. Significant analysis was performed by comparing the ideal value of scale factor (i.e. 1) and values obtained from the experiments. Results obtained for all configurations have accepted null hypothesis which indicates that scale factor is not significant in phase-based scanner datum transformation.
Highlights
Ability to acquire high density three-dimensional (3D) data with fast measurements has become main factor that terrestrial laser scanner (TLS) was employed in many 3D applications
Each experiment was designed for specific reason, multi network configurations employed to measure the effect of scale factor for indoor implementation which involves with high incidence angle occurrence, while the later experiment capable to assess any changes with regard to various distances
Evaluation of scale factor affect in phase based scanner datum transformation procedure was made by taking into account two (2) crucial elements, multi network configurations and distances
Summary
Ability to acquire high density three-dimensional (3D) data with fast measurements (up to one million points per second) has become main factor that terrestrial laser scanner (TLS) was employed in many 3D applications. This high precision provides enough raw data from which accurate and detailed 3D models can be obtained. According to Dumalski and Hejbudzka [1], TLS has shown a promising precise measurements to define minimal displacement and deformation of objects This has been demonstrated via their experiment that conducted using five different intervals (1mm, 3mm, 5mm, 10mm and 20mm) and several distances which eventually reaching the maximum range of the scanner. The outcomes have demonstrated that the improved calibration technique able to enhance the precision and accuracy of TLS measurement
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call