PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA
Engineering applications require high-precision 3D measurement techniques for object sizes that vary between small volumes (2–3 m in each direction) and large volumes (around 20 x 20 x 1–10 m). The requested precis...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2018-05-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/441/2018/isprs-archives-XLII-2-441-2018.pdf |
| _version_ | 1818529440901103616 |
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| author | H. Hastedt R. Rofallski T. Luhmann R. Rosenbauer D. Ochsner D. Rieke-Zapp |
| author_facet | H. Hastedt R. Rofallski T. Luhmann R. Rosenbauer D. Ochsner D. Rieke-Zapp |
| author_sort | H. Hastedt |
| collection | DOAJ |
| description | Engineering applications require high-precision 3D measurement techniques for object sizes that vary between small volumes (2–3 m in each direction) and large volumes (around 20 x 20 x 1–10 m). The requested precision in object space (1σ RMS) is defined to be within 0.1–0.2 mm for large volumes and less than 0.01 mm for small volumes. In particular, focussing large volume applications the availability of a metric camera would have different advantages for several reasons: 1) high-quality optical components and stabilisations allow for a stable interior geometry of the camera itself, 2) a stable geometry leads to a stable interior orientation that enables for an a priori camera calibration, 3) a higher resulting precision can be expected. With this article the development and accuracy evaluation of a new metric camera, the ALPA 12 FPS add|metric will be presented. Its general accuracy potential is tested against calibrated lengths in a small volume test environment based on the German Guideline VDI/VDE 2634.1 (2002). Maximum length measurement errors of less than 0.025 mm are achieved with different scenarios having been tested. The accuracy potential for large volumes is estimated within a feasibility study on the application of photogrammetric measurements for the deformation estimation on a large wooden shipwreck in the German Maritime Museum. An accuracy of 0.2 mm–0.4 mm is reached for a length of 28 m (given by a distance from a lasertracker network measurement). All analyses have proven high stabilities of the interior orientation of the camera and indicate the applicability for a priori camera calibration for subsequent 3D measurements. |
| first_indexed | 2024-12-11T17:06:54Z |
| format | Article |
| id | doaj.art-f2b7a50bb93041659056d2e6fb1c17a5 |
| institution | Directory Open Access Journal |
| issn | 1682-1750 2194-9034 |
| language | English |
| last_indexed | 2024-12-11T17:06:54Z |
| publishDate | 2018-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj.art-f2b7a50bb93041659056d2e6fb1c17a52022-12-22T00:57:39ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342018-05-01XLII-244144810.5194/isprs-archives-XLII-2-441-2018PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERAH. Hastedt0R. Rofallski1T. Luhmann2R. Rosenbauer3D. Ochsner4D. Rieke-Zapp5Jade University of Applied Sciences, Oldenburg, GermanyJade University of Applied Sciences, Oldenburg, GermanyJade University of Applied Sciences, Oldenburg, GermanyALPA Capaul & Weber AG, Zurich, SwitzerlandALPA Capaul & Weber AG, Zurich, SwitzerlandAICON 3D Systems GmbH, GermanyEngineering applications require high-precision 3D measurement techniques for object sizes that vary between small volumes (2–3 m in each direction) and large volumes (around 20 x 20 x 1–10 m). The requested precision in object space (1σ RMS) is defined to be within 0.1–0.2 mm for large volumes and less than 0.01 mm for small volumes. In particular, focussing large volume applications the availability of a metric camera would have different advantages for several reasons: 1) high-quality optical components and stabilisations allow for a stable interior geometry of the camera itself, 2) a stable geometry leads to a stable interior orientation that enables for an a priori camera calibration, 3) a higher resulting precision can be expected. With this article the development and accuracy evaluation of a new metric camera, the ALPA 12 FPS add|metric will be presented. Its general accuracy potential is tested against calibrated lengths in a small volume test environment based on the German Guideline VDI/VDE 2634.1 (2002). Maximum length measurement errors of less than 0.025 mm are achieved with different scenarios having been tested. The accuracy potential for large volumes is estimated within a feasibility study on the application of photogrammetric measurements for the deformation estimation on a large wooden shipwreck in the German Maritime Museum. An accuracy of 0.2 mm–0.4 mm is reached for a length of 28 m (given by a distance from a lasertracker network measurement). All analyses have proven high stabilities of the interior orientation of the camera and indicate the applicability for a priori camera calibration for subsequent 3D measurements.https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/441/2018/isprs-archives-XLII-2-441-2018.pdf |
| spellingShingle | H. Hastedt R. Rofallski T. Luhmann R. Rosenbauer D. Ochsner D. Rieke-Zapp PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA |
| title_full | PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA |
| title_fullStr | PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA |
| title_full_unstemmed | PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA |
| title_short | PROTOTYPIC DEVELOPMENT AND EVALUATION OF A MEDIUM FORMAT METRIC CAMERA |
| title_sort | prototypic development and evaluation of a medium format metric camera |
| url | https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLII-2/441/2018/isprs-archives-XLII-2-441-2018.pdf |
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