Istituto di Scienza e Tecnologie dell'Informazione     
Tarini M., Lensch H. P., Gösele M., Seidel H. P. 3D acquisition of mirroring objects using striped patterns. In: Graphical Models, vol. 67 (4) pp. 233 - 259. Elsevier, 2005.
Objects with mirroring optical characteristics are left out of the scope of most 3D scanning methods. We present here a new automatic acquisition approach, shape-from-distortion, that focuses on that category of objects, requires only a still camera and a color monitor, and produces range scans (plus a normal and a reflectance map) of the target. Our technique consists of two steps: first, an improved environment matte is captured for the mirroring object, using the interference of patterns with different frequencies in order to obtain sub-pixel accuracy. Then, the matte is converted into a normal and a depth map by exploiting the self coherence of a surface when integrating the normal map along different paths. The results show very high accuracy, capturing even smallest surface details. The acquired depth maps can be further processed using standard techniques to produce a complete 3D mesh of the object.
URL: http://scienceserver.cilea.it/cgi-bin/sciserv.pl?collection=journals&journal=15240703&issue=v67i0004
DOI: 10.1016/j.gmod.2004.11.002
Subject 3D scanning
3D range scanning
3D Acquisition Technologies
3D objects quality assessment
3D models
3D graphics
3D Virtual Reconstruction
I.4.8 Scene Analysis. Range data
I.4.8 Scene Analysis. Shading

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