Colour Helmholtz Stereopsis for Reconstruction of Dynamic Scenes with Arbitrary Unknown Reflectance
| Autor: | Jean-Yves Guillemaut, Nadejda Roubtsova |
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| Jazyk: | angličtina |
| Předmět: |
Helmholtz Stereopsis
Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 02 engineering and technology Article symbols.namesake Artificial Intelligence Arbitrary BRDF 0202 electrical engineering electronic engineering information engineering Calibration Computer vision 3D reconstruction Chromaticity business.industry Dynamic scenes 020207 software engineering Ranging Stereopsis Helmholtz free energy Pattern recognition (psychology) symbols 020201 artificial intelligence & image processing Bidirectional reflectance distribution function Artificial intelligence Computer Vision and Pattern Recognition business Software |
| Zdroj: | International Journal of Computer Vision |
| ISSN: | 0920-5691 |
| DOI: | 10.1007/s11263-016-0951-0 |
| Popis: | Helmholtz Stereopsis is a powerful technique for reconstruction of scenes with arbitrary reflectance properties. However, previous formulations have been limited to static objects due to the requirement to sequentially capture reciprocal image pairs (i.e. two images with the camera and light source positions mutually interchanged). In this paper, we propose colour Helmholtz Stereopsis—a novel framework for Helmholtz Stereopsis based on wavelength multiplexing. To address the new set of challenges introduced by multispectral data acquisition, the proposed Colour Helmholtz Stereopsis pipeline uniquely combines a tailored photometric calibration for multiple camera/light source pairs, a novel procedure for spatio-temporal surface chromaticity calibration and a state-of-the-art Bayesian formulation necessary for accurate reconstruction from a minimal number of reciprocal pairs. In this framework, reflectance is spatially unconstrained both in terms of its chromaticity and the directional component dependent on the illumination incidence and viewing angles. The proposed approach for the first time enables modelling of dynamic scenes with arbitrary unknown and spatially varying reflectance using a practical acquisition set-up consisting of a small number of cameras and light sources. Experimental results demonstrate the accuracy and flexibility of the technique on a variety of static and dynamic scenes with arbitrary unknown BRDF and chromaticity ranging from uniform to arbitrary and spatially varying. Electronic supplementary material The online version of this article (doi:10.1007/s11263-016-0951-0) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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