The basic principle of videogrammetry is the one used in photogrammetry systems, except that videogrammetry systems use video or digital cameras instead of photo cameras and that all the processing which is needed to obtain object coordinates from the images is performed in real time, without contact and with a high level of accuracy.
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Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991