A REAL TIME PHOTOGRAMMETRY SYSTEM FOR UNDERWATER AND INDUSTRIAL APPLICATIONS

摘要

A market survey within the Offshore Oil and Gas Industry highlighted the operational deficiencies in providing a dimensional measurement service based on traditional photographic based photogrammetry. This has led to the development of a real-time photogrammetry system which can be used operationally in air or underwater. The developed Non-Contact Measurement System (NCMS) is used by engineers and operational technicians to extract three-dimensional data for use in on-site decision making processes, or for reporting via CAD systems, to aid with construction, maintenance and repair. The system allows a range of inputs, including a purpose designed digital stills camera incorporating a high resolution CCD, video cameras, scanned photographs and satellite images. Analysis is carried out using a PC based image processing system, with full stereo viewing, and software written as a Microsoft Windows application. The paper introduces the development of the system, reports on its benefits and introduces the applications for such a product.