Point-clouds as photogrammetric representations of linear objects surfaces: The impact of extrinsic shooting parameters on the change of roughness-quality of their textures
This paper investigates the impact of various extrinsic shooting parameters regarding change of roughness-quality of surface textures of linear objects/elements when presented in the form of unstructured photogrammetrially created point-clouds. To perform this scientifically-wise, two types of speci...
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| Published in: | FME transactions Vol. 47; no. 2; pp. 316 - 325 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
University of Belgrade - Faculty of Mechanical Engineering, Belgrade
2019
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| Subjects: | |
| ISSN: | 1451-2092, 2406-128X |
| Online Access: | Get full text |
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| Summary: | This paper investigates the impact of various extrinsic shooting parameters regarding change of roughness-quality of surface textures of linear objects/elements when presented in the form of unstructured photogrammetrially created point-clouds. To perform this scientifically-wise, two types of specific quality-descriptors are identified: process-quality descriptors and smoothness related quality descriptors. Then, they are precisely defined, computed and mutually correlated. It can be generally concluded that for a fixed focal length, shooting directions perpendicular to the axis of targeted object/element, station-points uniformly radially distributed around it (at a circle of 360 deg.) and obtained process-quality descriptors values that belong to satisfying /recommended ranges, the performed photogrammetric digitalization is declared highly precise and satisfyingly accurate regarding roughness /smoothness and barely prone to object-to-camera distance. |
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| ISSN: | 1451-2092 2406-128X |
| DOI: | 10.5937/fmet1902316D |