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Near-Field Photometric Stereo in Ambient Light

Logothetis, Fotios and Mecca, Roberto and Quéau, Yvain and Cipolla, Roberto Near-Field Photometric Stereo in Ambient Light. (2016) In: 27th British Machine Vision Conference (BMVC 2016), 19 September 2016 - 22 September 2016 (York, United Kingdom).

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Official URL: https://doi.org/10.17863/CAM.4580

Abstract

Shape recovery from shading information has recently regained importance due to the improvement towards making the Photometric Stereo technique more reliable in terms of appearance of reflective objects. However, although more advanced models have been lately proposed, 3D scanners based on this technology do not provide reliable reconstructions as long as the considered irradiance equation neglects any additive bias. Depending on the context, such bias assumes different physical meanings. For example, in murky water it is known as saturated backscattered effect or for acquisition in pure air medium it is known as ambient light. Although the theoretical part covers both cases, this work mostly focuses on the pure air acquisition case. Indeed, we present a new approach based on ratios of differences of images where an exhaustive set of physical features are tackled while dealing with Photometric Stereo acquisition with considerable importance for the ambient light. To the best of our knowledge, this is the first attempt to recover the shape from Photometric Stereo considering simultaneously perspective viewing geometry, non-linear light propagation, both specular and diffuse reflectance plus the additive bias of the ambient light. Proof of concept is provided by showing experimental results on synthetic and real data.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to University of Cambridge. The definitive version is available at https://www.repository.cam.ac.uk/ The original PDF is available at: https://www.repository.cam.ac.uk/handle/1810/260349
HAL Id:hal-01436196
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Università di Bologna (ITALY)
Other partners > University of Cambridge (UNITED KINGDOM)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
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Deposited By: IRIT IRIT
Deposited On:05 Jan 2017 08:26

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