Uncalibrated active stereo for wide and dense 3D data acquisition

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In this paper, we propose an uncalibrated, multi-image 3D reconstruction technique, using coded structured light. Normally, a conventional coded structured light system consists of a camera and a projector and needs precalibration before scanning. Since the camera and the projector have to be fixed after calibration, reconstruction of a wide area of the scene or reducing occlusions are difficult and sometimes impossible. In the proposed method, precalibration can be successfully omitted by applying the uncalibrated stereo technique, thereby multiple scanning while moving the camera or the projector is possible. As the result, users can freely move either the cameras or projectors to scan a wide range of objects.

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