Hydro-quebec

Régis Houde

Michel Blain

Serge Sarraillon

Julien Beaudry

Bruce Hazel

François Mirallès

Jean Cöté

Richard Laliberté

System and method for tridimensional cartography of a structural surface. Two wires are extended in front and along the structural surface so as to define a reference surface. A measuring unit comprising a laser arrangement and a camera is moved in front of the structural surface so as to progressively scan the surface. Tow distinct light planes directed toward the structural surface are projected by means of the laser arrangement. Images of the structural surface containing lines resulting from an intersection of the light planes with the structural surface and four reference points resulting from an intersection of the light planes with the wires are captured by means of the camera. The images are processed to determine theD coordinates of the lines defining the mapping in a reference system bound to the reference surface considering the position and the orientation of the measuring unit based on the reference points.

System and method for tridimensional cartography of a structural surface

A method and apparatus is disclosed for providing a determined position in real-time of an underwater object using a plurality of sensors operating at various sampling rates and for using the determined position in real-time in order to perform inspection tasks inter alia.

Method and apparatus for determining the position of an underwater object in real-time

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Sainte-Julie, Canada

Régis Houde