Combining time of flight and photometric stereo imaging for 3D reconstruction of discontinuous scenes

Le Francois, Emma and Griffiths, Alexander D. and McKendry, Jonathan J. D. and Chen, Haochang and Li, David Day-Uei and Henderson, Robert K. and Herrnsdorf, Johannes and Dawson, Martin D. and Strain, Michael J. (2021) Combining time of flight and photometric stereo imaging for 3D reconstruction of discontinuous scenes. Optics Letters, 46 (15). pp. 3612-3615. ISSN 0146-9592 (https://doi.org/10.1364/OL.424000)

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Abstract

Time of Flight and Photometric Stereo are two three-dimensional (3D) imaging techniques with complementary properties where the former can achieve depth-accuracy in discontinuous scenes and the latter can reconstruct surfaces of objects with fine depth details and high-spatial resolution. In this work, we demonstrate the surface reconstruction of complex 3D fields with discontinuity between objects by combining the two imaging methods. Using commercial LEDs, a single-photon avalanche diode camera and a mobile phone device, high-resolution of surface reconstruction is achieved with a RMS error of 6% for an object, auto-selected from a scene imaged at a distance of 50~cm.

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