1 August 1990 Uberwachung von steinverwitterung durch makro-photogrammetrie
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Proceedings Volume 1395, Close-Range Photogrammetry Meets Machine Vision; 13950N (1990) https://doi.org/10.1117/12.2294266
Event: Close-Range Photogrammetry Meets Machine Vision, 1990, Zurich, Switzerland
A Rollei 6006 partial-metric camera was equiped with special objectives of 50 resp. 28 mm focal length to control and measure the surfaces of small sand-stone plates (complex research programme of the Ministry of Science and Technology of the FRG). The lenses were mounted in retro-position, a surface of the stone samples of 5 cm x 5 cm resp. 2.5 cm x 2.5 cm can be photographed. The depth of focus was 8 resp. 6 mm. An optical flat grid was used for the system calibration. The measurements were carried out by a Zeiss Planicomp C100. The standard deviation of eleva- tion after bundle adjustment was 16 m for the 50 mm-lens resp. 9 m for the 28 mm-lens. The planimetry was much better. Results of bundle adjustment will be shown and a CAD-evaluation will demonstrate the stone weathering.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Landolf Mauelshagen, Landolf Mauelshagen, } "Uberwachung von steinverwitterung durch makro-photogrammetrie", Proc. SPIE 1395, Close-Range Photogrammetry Meets Machine Vision, 13950N (1 August 1990); doi: 10.1117/12.2294266; https://doi.org/10.1117/12.2294266

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