Close range photogrammetry is the name given to the ingenious technique of ascertaining spatial data,such as the size and position of objects,from two-dimensional images.Blom Maritime AS started using this technique onshore in the early 1990s for customers in the oil industry.While it certainly showed promising,technological restraints prevented success.However,with the advent of improved digital cameras,enhanced software and faster computers,Blom Maritime AS returned to this technique in the late 1990s and carried out underwater measurements in the spring of 2000.
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