Optical coherence tomography evaluation of internal random structure of wood fiber tissue

Erkki Alarousu; Igor P. Gurov; Jukka T. Hast; Risto A. Myllyl; Tuukka Prykauri; Alexey Zakharov

doi:10.1117/12.514954

1 May 2003 Optical coherence tomography evaluation of internal random structure of wood fiber tissue

Erkki Alarousu, Igor P. Gurov, Jukka T. Hast, Risto A. Myllyl, Tuukka Prykauri, Alexey Zakharov

Proceedings Volume 5132, Sixth International Conference on Quality Control by Artificial Vision; (2003) https://doi.org/10.1117/12.514954
Event: Quality Control by Artificial Vision, 2003, Gatlinburg, TE, United States

Abstract

Interferometers with a low-coherent illumination allow non-contact evaluating random tissues by locating the visibility maxima of interference fringes. The problem is the light scattering by a tissue, it is why interference fringes are often distorted. Other problem consists in the need to process large amount of data obtained in optical coherence tomography (OCT) imaging systems. We propose to use a stochastic fringe model and Kalman filtering method for noisy low-coherence fringe processing. A fringe signal value is predicted at a next discretization step using full information available before this step and a prediction error is used for dynamic correction of fringe envelope and phase. The advantages of Kalman filtering method consist in its noise-immunity, high-speed data processing and optimal evaluation of fringe parameters. Several specially fabricated wood fiber tissues have been measured with a low-coherence interferometer. The obtained data from the tissue internal structure are evaluated using a dynamic stochastic fringe processing algorithm applied to fringe signal samples series. The statistical approach for characterizing wood fiber tissues of different kinds is proposed.

Citation Download Citation

Erkki Alarousu, Igor P. Gurov, Jukka T. Hast, Risto A. Myllyl, Tuukka Prykauri, and Alexey Zakharov "Optical coherence tomography evaluation of internal random structure of wood fiber tissue", Proc. SPIE 5132, Sixth International Conference on Quality Control by Artificial Vision, (1 May 2003); https://doi.org/10.1117/12.514954

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