This web page contains supplemental results related to our (un)structured light scanning method published at ICCV 2011 and titled Unstructured Light Scanning to Overcome Interreflections. All scenes are on a ground with two walls (giving a corner) to produce basic diffuse interreflections. Our method used unstructured noise patterns having frequencies ranging from 64 to 128 cycles per frame horizontally. Other tested methods include the well-known Gray codes, Phase-shift (three 64 cycles per frame patterns) , and the Gupta codes [2,3] without any iterative process. Note that while our method recovers x and y correspondence maps, we here only display x correspondences for a direct comparison with the other methods. Also, when ‘filtering’ is indicated, the correspondence maps were filtered with a 3×3 median filter (before the voting scheme in the case of the Gupta method). Finally, we show on the right an error map that was computed by taking the difference with a reference map given by our unstructured method using 200 patterns.
 Fast three-step phase-shifting algorithm. Huang et al., Applied Optics 2006.
 Structured Light 3D Scanning in the Presence of Global Illumination. Gupta et al., CVPR 2011.
 A Practical Approach to 3D Scanning in the Presence of Interreflections, Subsurface Scattering and Defocus. Gupta et al., IJCV 2012.