Discorpy: algorithms and software for camera calibration and correction

Vo, Nghia T.

doi:10.1107/s1600577525002267

Title: Discorpy: algorithms and software for camera calibration and correction

Journal Article · Wed Apr 09 00:00:00 UTC 2025 · Journal of Synchrotron Radiation (Online)

DOI: https://doi.org/10.1107/s1600577525002267 · OSTI ID:2570115

^[1]

Brookhaven National Laboratory (BNL), Upton, NY (United States)

Camera or lens-based detector calibration is essential for spatial accuracy in applications like dimensional tomography, optical metrology, and computer vision. Many methods and software exist yet there is still a lack of approaches that achieve both high accuracy and robustness while being easy to use and capable of handling a wide range of distortions. Radial lens distortion is common in high-resolution X-ray detector optics used in parallel-beam tomography at synchrotrons. Achieving sub-pixel accuracy requires calibrating with an optical target image. Although methods for characterizing radial distortion are well established, acquired images often also include perspective distortion and optical center offset. Here, we present our approaches to individually characterize and correct both types of distortion using a single calibration image, implemented in the Discorpy software.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: SC0012704

OSTI ID:: 2570115

Report Number(s):: BNL--228311-2025-JAAM

Journal Information:: Journal of Synchrotron Radiation (Online), Journal Name: Journal of Synchrotron Radiation (Online) Journal Issue: 3 Vol. 32; ISSN 1600-5775

Publisher:: International Union of CrystallographyCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Discorpy
camera calibration
optical center determination
perspective distortion
radial distortion
tomography

Title: Discorpy: algorithms and software for camera calibration and correction

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References (23)

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