System and method for 3D measurement and surface reconstruction
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[0048]FIG. 1 shows an active vision system according to a preferred embodiment of the invention. The system comprises an LCD projector 1 adapted to cast a pattern of light onto an object 2 which is then viewed by a camera and processor unit 3. The relative position between the projector 1 and the camera in the camera and processing unit 3 has six degrees of freedom (DOF). When a beam of light is cast from the projector 1 and viewed obliquely by the camera, the distortions in the beam line may be translated into height variations via triangulation if the system is calibrated including the relative position between the projector 1 and camera. The vision system may be self-recalibrated automatically if and when this relative position is changed. The camera and processor unit 3 preferably includes a processor stage, as well as the camera, for processing the observed distortions in the projected pattern caused by the object 2 and associated data and for enabling and carrying out reconstr...
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