Results 181 to 190 of about 7,708 (206)
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UNDERWATER PHOTOGRAMMETRY IN THE NORTH SEA
The Photogrammetric Record, 1983AbstractUnderwater photogrammetry is being used in the particularly hostile environment of the North Sea where it has been put into commercially viable operation. The authors discuss underwater photogrammetry related to other means of inspection of oil platforms. They also deal with operational experience of 35 mm and 70 mm cameras, camera calibration,
J. D. Leatherdale, D. J. Turner
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Operational experience in underwater photogrammetry
ISPRS Journal of Photogrammetry and Remote Sensing, 1991Abstract Underwater photogrammetry has become established as a cost-effective technique for inspection and maintenance of platforms and pipelines for the offshore oil industry. A commercial service based in Scotland operates in the North Sea, USA, Brazil, West Africa and Australia.
John D. Leatherdale, D. John Turner
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The Photogrammetric Record, 1976
AbstractMicrorelief mapping of the sea bed can only be carried out by photo‐optical methods. It is shown that suitable equipment, bought off the shelf, can produce useful results. The paper describes equipment performance trials and a practical application in a study of large scale sea bed topography.RésuméLa cartographie du microrelief de fonds sous ...
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AbstractMicrorelief mapping of the sea bed can only be carried out by photo‐optical methods. It is shown that suitable equipment, bought off the shelf, can produce useful results. The paper describes equipment performance trials and a practical application in a study of large scale sea bed topography.RésuméLa cartographie du microrelief de fonds sous ...
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Applications of Underwater Photogrammetry
Marine Technology Society Journal, 2006The reliability of a photogrammetric system is a function of the degree of constraints applied to the system. Mapping tests have been performed to investigate the relative importance of these constraints. Underwater mapping consists of five elements: (1) ground control, (2) photogrammetric equipment, (3) field techniques, (4) photogrammetric analyses,
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Stereoscopic Coral Maps from Underwater Photogrammetry
The Cartographic Journal, 1983AbstractA block of 360 overlapping photographs were taken underwater with a Nikonos III 35 mm camera fitted with a wide angle 15 mm Nikkor lens. The photographs cover a sloping area, 40 metres by 10 metres, on Broadhurst Reef (Queensland) from a depth of 2.7 metres to 26.2 metres. Ninety-nine steel pegs were surveyed and used as ground control stations
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Remote sensing using laser projection photogrammetry for underwater surveys
IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004Washington Department of Fish and Wildlife researchers combined the Laser/Video Photogrammetric System (originally presented at MTS/IEEE OCEANS 2002 Conference) with precision navigation to provide an efficient "tool" for producing quantitative benthic survey data.
D.M. Kocak +3 more
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Underwater Photogrammetry for Archaeology. What Will Be the Next Step?
International Journal of Heritage in the Digital Era, 2013Since 1973 archaeology and computer science have developed close ties in Marseille. Two departments (computer science and archaeology) from the French National Centre for Scientific Research (CNRS) in Marseille started working together and laid the cornerstone of the Computer Applications and Quantitative Methods in Archaeology (CAA) community ...
Pierre Drap +7 more
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MEASUREMENT OF UNDERWATER STRUCTURE BY USING UAV PHOTOGRAMMETRY
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering), 2022Wataru MOCHIZUKI +4 more
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Non-Conventional System in Underwater Photogrammetry
1992Experimental test of non conventional low cost systems on underwater photogrammetry. The results are presented in terms of potentiality either on final accuracy.
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Deep underwater surveys by photogrammetry for underwater archeology and marine biology
2015no ...
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