3-D Scanning of Nonopaque Objects by Means of Imaging Emitted Structured Infrared Patterns

Mériaudeau, Fabrice; Secades, Luis Alonso Sanchez; Eren, Gönen; Erçil, Aytül; Truchetet, Frédéric; Aubreton, Olivier; Fofi, David

doi:10.1109/tim.2010.2046694

Cited by 29 publications

(14 citation statements)

References 33 publications

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“…The fiber orientation is assessed through the "Scanning From Heating" (SFH) system initially used for threedimensional digitization of transparent and metallic object [13,14,15,16]. Recently, the system has been extended to detect sub-surface defect on metallic object as well as fiber orientation assessment in carbon composite material [17].…”

Section: Methodsmentioning

confidence: 99%

Wood fiber orientation assessment based on punctual laser beam excitation: A preliminary study

Belkacemi¹,

Massich²,

Lemaître³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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The EU imposes standards for the use of wood in structural applications. Local singularities such as knots affect the wood mechanical properties. They can be revealed by looking at the wood fiber orientation. For this reason, many methods were proposed to estimate the orientation of wood fiber using optical means, X-rays, or scattering measurement techniques. In this paper, an approach to assess the wood fiber orientation based on thermal ellipsometry is developed. The wood part is punctually heated with a Nd-YAG Laser and the thermal response is acquired by an infrared camera. The thermal response is elliptical due to the propagation of the heat through and along the wood fibers. An experiment is presented to show the capacity of such techniques to assess fiber orientation on wood specimen. In addition, an appropriate algorithm is given to extract the orientation of the ellipse.

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Section: Methodsmentioning

confidence: 99%

Wood fiber orientation assessment based on punctual laser beam excitation: A preliminary study

Belkacemi¹,

Massich²,

Lemaître³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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“…Knowing the parameters of the system (which are obtained by a previous calibration), the 3D coordinates of the point are computed using triangulation method. Some results have been presented in [8] and [9]. On Fig.2 (b) we present results obtained with a glass object where the mean error measurement has been estimated to 360 μm.…”

Section: Scanning From Heating Principlementioning

confidence: 98%

“…That is why they are not easy to be applied in industrial process. In the following part we will present the Scanning From Heating approach [9]. This method has been initially developed for 3D scanning of glass objects which are transparent and also specular.…”

Section: Introductionmentioning

confidence: 99%

3D digitization of metallic specular surfaces using scanning from heating approach

et al. 2011

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Because of the difficulty of dealing with specularity of several surfaces, few methods have been proposed to measure three-dimensional shapes of specular metallic objects. In this paper we present an application on this kind of material of an approach called "Scanning From Heating". This approach has been developed initially for 3D reconstruction of transparent objects. This article presents an application of the working principle of SFH method on material with high thermal conductivity.

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“…Among the recent works, approaches such as "scanning from heating" [3], where the three-dimensional data is reconstructed from a heat pattern visualized with a calibrated IR camera or "shape from induced fluorescence" [4] where the three-dimensional reconstruction takes place thanks to a generated visible pattern induced by florescence onto the object surface, appear to be very promising for three-dimensional inspection with potential adaptation for transparent as well as specular objects.…”

Section: State Of the Artmentioning

confidence: 99%

“…However, when dealing with the inspection of transparent or highly reflective surfaces like mirror, standard solutions are not available yet. Referring to these non "Lambertian" surfaces, Ihrke et al [1] published an exhaustive survey which was recently completed by Meriaudeau et al[2]for transparent objects.Among the recent works, approaches such as "scanning from heating" [3], where the three-dimensional data is reconstructed from a heat pattern visualized with a calibrated IR camera or "shape from induced fluorescence" [4] where the three-dimensional reconstruction takes place thanks to a generated visible pattern induced by florescence onto the object surface, appear to be very promising for three-dimensional inspection with potential adaptation for transparent as well as specular objects.The shape from polarization technique, based on the analysis of polarimetric property of the light reflected from the object, is also well adapted for non "lambertian" surfaces. This is an unconventional approach because it does not rely on the tradionnaly used parameter in machine vision such as the intensity and wavelength.…”

mentioning

confidence: 99%

Shape from polarization in the far IR applied to 3D digitization of transparent objects

Kechiche¹,

Rantoson²,

Aubreton³

et al. 2016

Proceedings of the 2016 International Conference on Quantitative InfraRed Thermography

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This paper presents an application of "shape from polarization" method in the far Infrared range with applications for three-dimensional reconstruction of transparent objects. Shape from polarization is a recent application of more general polarization imaging technique having the aim to digitize the shape of the observed object. The principle is to evaluate the normal on each observed point followed by an integration procedure. The technique is well developed in the visible domain, but not in the far infrared domain due to the requirement of telecentric optics. We propose here a complete setup in the 8-13 micrometer spectral band with an appropriate source and a reconstruction method including the pinhole camera model in order to use standard optics for the camera. We present primary results of threedimensional digitization of transparent objects.Keywords: Polarization, thermal imaging, transparent objects, long wave infrared and three-dimensional digitization State of the artRecovering three-dimensional surface shape of objects, remains an important research area of computer vision. However, when dealing with the inspection of transparent or highly reflective surfaces like mirror, standard solutions are not available yet. Referring to these non "Lambertian" surfaces, Ihrke et al [1] published an exhaustive survey which was recently completed by Meriaudeau et al.[2]for transparent objects.Among the recent works, approaches such as "scanning from heating" [3], where the three-dimensional data is reconstructed from a heat pattern visualized with a calibrated IR camera or "shape from induced fluorescence" [4] where the three-dimensional reconstruction takes place thanks to a generated visible pattern induced by florescence onto the object surface, appear to be very promising for three-dimensional inspection with potential adaptation for transparent as well as specular objects.The shape from polarization technique, based on the analysis of polarimetric property of the light reflected from the object, is also well adapted for non "lambertian" surfaces. This is an unconventional approach because it does not rely on the tradionnaly used parameter in machine vision such as the intensity and wavelength. A standard camera model limited by brightness and hue is not enough to measure the polarization parameters.In this paper, we used the shape from polarization method in the far infrared band. This spectral band corresponds to a part of the spectrum where transparent materials like glass and some plastics appear opaque. Since the pioneer works of Wolff [5] on polarization imaging, recent extensions have been made possible by active lightings systems [6], multispectral approach [7] and infrared imaging. In the field of remote sensing Middle IR band is then used for material detection and separation [8]. The last example used the near IR band [9] in order to build a depth map of the outdoor environment. This brings new interest in polarization imaging techniques. Proposed MethodThe acquisition and reconstruction proc...

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3-D Scanning of Nonopaque Objects by Means of Imaging Emitted Structured Infrared Patterns

Abstract: International audienc

Cited by 29 publications

References 33 publications

Wood fiber orientation assessment based on punctual laser beam excitation: A preliminary study

Wood fiber orientation assessment based on punctual laser beam excitation: A preliminary study

3D digitization of metallic specular surfaces using scanning from heating approach

Shape from polarization in the far IR applied to 3D digitization of transparent objects

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