Calibration of a stereoscopic video endoscope for precise three-dimensional geometrical measurements in arbitrary spectral bands

Alexander S. Machikhin; Alexey V. Gorevoy; Demid D. Khokhlov; Alexander A. Naumov

doi:10.1117/12.2307381

24 May 2018 Calibration of a stereoscopic video endoscope for precise three-dimensional geometrical measurements in arbitrary spectral bands

Alexander S. Machikhin, Alexey V. Gorevoy, Demid D. Khokhlov, Alexander A. Naumov

Author Affiliations +

Proceedings Volume 10677, Unconventional Optical Imaging; 106770F (2018) https://doi.org/10.1117/12.2307381
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

Nowadays, the stereoscopic endoscopy is a widely used tool for precise three-dimensional (3D) measurements of hard-to-reach elements in industrial and biomedical applications. The most common approach for its implementation is the utilization of prism-based optical tips which allow to acquire two images from different viewpoints on a single sensor. Stereo video endoscopes are typically equipped with a wideband white light source, but contrast visualization of the inspected object and, therefore, accurate quantitative characterization of its parameters often requires narrow band spectral imaging. We show that the standard geometrical calibration may lead to significant measurement errors when obtained using white illumination and applied to narrow band images. In order to overcome this, we propose the new calibration procedure based on a proper choice of a few spectral bands for calibration and interpolation of the calculated parameters. Results of multiple experiments show that the proposed technique fosters the measurement accuracy increase.

Conference Presentation

Citation Download Citation

Alexander S. Machikhin, Alexey V. Gorevoy, Demid D. Khokhlov, and Alexander A. Naumov "Calibration of a stereoscopic video endoscope for precise three-dimensional geometrical measurements in arbitrary spectral bands", Proc. SPIE 10677, Unconventional Optical Imaging, 106770F (24 May 2018); https://doi.org/10.1117/12.2307381

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available