Proceedings PaperMultiple color-coded illumination for rapid active ranging
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Actually, the rapid acquisition and measurement of 2- and 3- D contours and shapes represent an important assignment in modern production processes and quality control. Especially, the nontactile methods like optical triangulation and the digital image processing get more and more importance. With the methods of color image processing a new field of nontactile 3D object ranging arises. Using color coded illuminations it is possible to generate a 3D object description by processing only a single RGB-image. Two of these methods are: the color coded phase-shift method and the color triangulation. The color triangulation combines the methods of the color image processing with the distance measurement by triangulation. The color coded phase-shift method is based on the gray scale phase-shift method. Since both methods are able to generate a 3D object description by processing only a single RGB-image, it is possible to combine these two methods to realize a fast and precise active ranging system without ambiguities.