3D reconstruction method of defocused images based on optical system analysis

Peng Chen; Shixiang Wang

doi:10.1117/12.3009499

29 December 2023 3D reconstruction method of defocused images based on optical system analysis

Peng Chen, Shixiang Wang

Proceedings Volume 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023); 129761U (2023) https://doi.org/10.1117/12.3009499
Event: 8th Asia Pacific Conference on Optics Manufacture & 3rd International Forum of Young Scientists on Advanced Optical Manufacturing, 2023, Shenzhen, China

Abstract

The conventional three-dimensional (3D) reconstruction simplifies the camera into a pinhole camera model. The simplified model may be limited by the change of the optical center when the working distance deviates from the calibration distance. A three-dimensional reconstruction method of defocused images based on optical system analysis was proposed. Firstly, an optical system model for the imaging system to be calibrated was established on a low number of image captures. Then according to the camera parameters calculated by calibrations under the proposed model, the relationship between the working distance and the camera parameters in depth of field was quantified. The camera parameters of different working positions were obtained in a single calibration, without repeated calibrations at different positions. The effectiveness of the proposed model in dealing with defocusing 3D reconstruction is proved by experiments.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Peng Chen and Shixiang Wang "3D reconstruction method of defocused images based on optical system analysis", Proc. SPIE 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023), 129761U (29 December 2023); https://doi.org/10.1117/12.3009499

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KEYWORDS

Calibration

Cameras

3D modeling

Depth of field

Optical analysis

Geometrical optics

Imaging systems

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