3D imaging endoscopy using small-size prism-based stereo systems

Alexander Machikhin; Alexey Gorevoy; Demid Khokhlov; Vladislav Batshev

doi:10.1117/12.2556919

31 January 2020 3D imaging endoscopy using small-size prism-based stereo systems

Alexander Machikhin, Alexey Gorevoy, Demid Khokhlov, Vladislav Batshev

Proceedings Volume 11433, Twelfth International Conference on Machine Vision (ICMV 2019); 114331X (2020) https://doi.org/10.1117/12.2556919
Event: Twelfth International Conference on Machine Vision, 2019, Amsterdam, Netherlands

Abstract

We address the problem of non-contact geometrical measurements of hard-to-reach objects that is an important task in various industrial and medical applications. We have developed two small-size prism-based systems for simultaneous acquisition of stereoscopic images by a single sensor. For a correct mathematical description of these systems, we use a ray tracing camera model based on a vector form of Snell’s law. We demonstrate that using the chessboard calibration target allows simultaneous geometrical calibration and image quality assessment. We show that the appearance of chromatic aberrations in RGB images caused by the prism may be significantly reduced by applying separate rectification procedure to each color channel. Experiments confirm that the developed optical systems provide high image quality and the software provides high precision of three-dimensional (3D) geometrical measurements. Described systems may become the basis of small-diameter endoscopic probes for various applications.

Citation Download Citation

Alexander Machikhin, Alexey Gorevoy, Demid Khokhlov, and Vladislav Batshev "3D imaging endoscopy using small-size prism-based stereo systems", Proc. SPIE 11433, Twelfth International Conference on Machine Vision (ICMV 2019), 114331X (31 January 2020); https://doi.org/10.1117/12.2556919

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KEYWORDS

Calibration

Endoscopy

Modulation transfer functions

Imaging systems

3D metrology

Cameras

Image quality

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