A RANSAC based phase noise filtering method for the camera-projector calibration system

Article Optics

Calibration and rectification of bi-telecentric lenses in Scheimpflug condition

Yan Hu et al.

Summary: The article introduces the Scheimpflug lens-based imaging model and its application, proposes a simplified imaging model based on projection, and develops calibration algorithms and rectification methods for stereo matching. The effectiveness and accuracy of the methods are verified through experiments.

OPTICS AND LASERS IN ENGINEERING (2022)

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Article Optics

Estimating the quality of stripe in structured light 3D measurement

Xue Qi et al.

Summary: This paper proposes a method to estimate the quality of captured stripe images in structured light 3D measurement system, using the parameters of skewness coefficient and noise level, and it can automatically recognize large error data.

OPTOELECTRONICS LETTERS (2022)

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Article Optics

Least-squares gamma estimation in fringe projection profilometry

Antonio Munoz et al.

Summary: This paper introduces a novel method to estimate and compensate the nonlinear gamma factor in fringe projection profilometry, which only requires a minimal set of three fringe sinusoidal images. The proposed method demonstrates the feasibility to estimate and correct the gamma distortion in computational legacy data.

APPLIED OPTICS (2021)

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Editorial Material Optics

Heterodyne phase shifting method in scanning probe microscopy

Andrea Di Donato et al.

Summary: The paper introduces a novel implementation of the continuous phase shifting method, called heterodyne holography, in a scanning probe microscope setup to retrieve complex scattered fields in an on-axis configuration. This method combines scanning interference microscopy with low-coherent signals acquired in the frequency domain to capture a continuous sequence of holograms at different wavelengths in just one scan. By utilizing the advantages of phase shifting technique, it overcomes limitations of off-axis holography in providing quantitative phase imaging.

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION (2021)

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Review Optics

Calibration of fringe projection profilometry: A comparative review

Shijie Feng et al.

Summary: In this work, a review of some of the most commonly used calibration methods in fringe projection profilometry is presented. The study covers basic principles, advantages, limitations, and factors affecting the performance of calibration methods. Quantitative and qualitative comparative experiments are used to showcase the advantages and suitability of each method.

OPTICS AND LASERS IN ENGINEERING (2021)

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Article Optics

3D defect detection of connectors based on structured light

Ji Yue et al.

Summary: This paper proposes a method for detecting connector defects based on structured light, which combines structured light and binocular stereo vision to obtain three-dimensional data for connectors. Point cloud registration and decision trees are used for defect identification and classification, achieving high accuracy in both 3D reconstruction and defect classification. Experimental results demonstrate the effectiveness of the proposed method in detecting and classifying three-dimensional connector defects.

OPTOELECTRONICS LETTERS (2021)

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Article Optics