3D Reconstruction from 3D Cultural Heritage Models
3D data acquisition and 3D virtual and physical reproductions are shortly described within the framework of our experiments with museum artefacts. Our experience in the cultural heritage field illustrates a lot of problems encountered and the solutions we brought. From this short analysis, a perspective for the next 10 or 20 years is sketched. There are many difficulties, either scientific or technological. We point out some of them that seem to be very important in the to domains of science and technology. Thus we describe emerging activities in the scientific domain where Spectroscopic Ellipsometry is now starting for the spectral acquisition of very accurate optical data on materials, i.e. complex indices of refraction. Surprisingly inverse methods should also appear with the difficulty to 3D capture a material shape very glossy, transparent or translucent. The text provides many examples and, among them, the rendering and making of the famous tablet of Idalion.
KeywordsSpectrophotometry goniospectrophotometry spectroscopic ellispsometry spectral rendering virtual metallurgy stained-glass window natural lighting
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