STRUCTURED-LIGHT, TRIANGULATION-BASED THREE-DIMENSIONAL DIGITIZER

摘要

The present invention provides a system for illuminating an object with a special kind of structured light pattern, recording the shape of the reflected points of light by means of a camera (103), and, by a triangulation technique that does not depend on the fixed direction of the light source (105) relative to the camera, reconstructing the 3D shape of the object through a computer (111) using the data points collected from the reflection of the structured light pattern. The data acquisition according to the present invention is simplified to acquiring only two or four images of the object, thereby significantly increasing the digitalization speed over that of laser-based scanners. The light source projects both structured light and uniform illumination light from the same source, and that allows for numerical normalization of the images.