J. Viguier, A. Jehl, R. Collet, L. Bleron, and F. Meriaudeau, Improving strength grading of timber by grain angle measurement and mechanical modeling, Wood Material Science & Engineering, vol.50, issue.1, pp.145-156, 2015.
DOI : 10.1016/S0143-8166(02)00144-6

P. H. Steele, S. C. Neal, K. A. Mcdonald, and S. M. Cramer, The slope-of-grain indicator for defect detection in unplaned hardwood lumber, For.Prod.J, vol.41, issue.1, pp.15-20, 1991.

J. Nyström, Automatic measurement of fiber orientation in softwoods by using the tracheid effect, Computers and Electronics in Agriculture, vol.41, issue.1-3, pp.91-99, 2003.
DOI : 10.1016/S0168-1699(03)00045-0

D. Wu and G. Busse, Lock-in thermography for nondestructive evaluation of materials, Revue G??n??rale de Thermique, vol.37, issue.8, pp.693-703, 1998.
DOI : 10.1016/S0035-3159(98)80047-0

H. Fernandes and X. Maldague, Fiber orientation assessment in complex shaped parts reinforced with carbon fiber using infrared thermography, Quantitative InfraRed Thermography Journal, vol.1, issue.1, pp.64-79, 2015.
DOI : 10.1016/S1359-835X(98)00022-0

T. Li, D. P. Almond, and D. A. Rees, Crack imaging by scanning pulsed laser spot thermography, NDT & E International, vol.44, issue.2, pp.216-225, 2011.
DOI : 10.1016/j.ndteint.2010.08.006

A. Legrand, F. Meriaudeau, and P. Gorria, Active infrared non-destructive testing for glue occlusion detection within plastic lids, NDT & E International, vol.35, issue.3, pp.177-187, 2002.
DOI : 10.1016/S0963-8695(01)00043-3

J. Krapez, G. Gardette, D. D. Balageas, . Etudes, and . De-recherches-aerospatiales-onera-publications-tp, Thermal ellipsometry in steady-state or by lock-in thermography. Application for anisotropic materials characterization, Proceedings of the 1996 International Conference on Quantitative InfraRed Thermography, 1996.
DOI : 10.21611/qirt.1996.042

T. Maku, Studies on the Heat Conductin in Wood: The present study is a discussion on the results of investigations made hitherto by author on heat conduction in wood, ????: ???????????, vol.13, pp.1-80, 1954.

F. F. Kollmann, C. Jr, and W. A. , Principles of wood science and technology. vol. I. Solid Wood, 1968.

A. Bajard, O. Aubreton, D. Fofi, O. Morel, F. Truchetet et al., Non conventional Imaging Systems for 3D Digitization of transparent and/or specular manufactured objects, QCAV2013, 11th Interntional Conference on Quality Control by Artificial Vision, pp.190-197, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00831495

O. Aubreton, A. Bajard, B. Verney, and F. Truchetet, Infrared system for 3D scanning of metallic surfaces, Machine Vision and Applications, vol.41, issue.2, pp.1513-1524, 2013.
DOI : 10.1007/s00138-013-0487-z
URL : https://hal.archives-ouvertes.fr/hal-00864695

G. Eren, O. Aubreton, F. Meriaudeau, L. S. Secades, D. Fofi et al., Scanning from heating: 3D shape estimation of transparent objects from local surface heating, Optics Express, vol.17, issue.14, pp.11457-11468, 2009.
DOI : 10.1364/OE.17.011457
URL : https://hal.archives-ouvertes.fr/hal-00578332

F. Mériaudeau, L. Secades, G. Eren, A. Erçil, F. Truchetet et al., 3-D Scanning of Nonopaque Objects by Means of Imaging Emitted Structured Infrared Patterns, IEEE Transactions on Instrumentation and Measurement, vol.59, issue.11, pp.59-2898, 2010.
DOI : 10.1109/TIM.2010.2046694

M. Belkacemi, C. Stolz, A. Mathieu, G. Lemaitre, J. Massich et al., Nondestructive testing based on scanning-from-heating approach: application to nonthrough defect detection and fiber orientation assessment, Journal of Electronic Imaging, vol.24, issue.6, pp.61112-061112, 2015.
DOI : 10.1117/1.JEI.24.6.061112

J. Matthews, An introduction to edge detection: The sobel edge detector, 2002.

A. Fitzgibbon, M. Pilu, and R. B. Fisher, Direct least square fitting of ellipses Pattern Analysis and Machine Intelligence, IEEE Transactions on, vol.21, issue.5, pp.476-480, 1999.