Compact stereoscopic prism-based optical system with an improved accuracy of 3-D geometrical measurements

Мачихин, А. С.; Batshev, V. I.; Gorevoy, Alexey V.; Khokhlov, Demid D.; Naumov, Alexander; Kuznetsov, A.O.

doi:10.1016/j.ijleo.2019.04.004

Cited by 9 publications

(2 citation statements)

References 9 publications

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“…The measurements at different positions on the rotary table should be correspond to normal distribution. And standard deviation of normal distribution described the dispersion degree of the measurement results and reflect the repeatability [28,29]. According to equation (17), the standard deviation defined as σ was calculated.…”

Section: Repeatability Of Methodsmentioning

confidence: 99%

A method combining laser and vision detection for on-line measurement of small modules gears

Yu,

Li,

Sun

et al. 2024

Meas. Sci. Technol.

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Intelligent production of small modulus powder metallurgy gearing requires rapid and accurate measurement to ensure product quality. Currently, the contact measurement method exemplified by gear measuring centers lack efficiency and require gear mounting reference, which prevent them from meeting the requirements for on-line inspection of small modulus gears. Therefore, an optical method of gears was intensively researched. It combined the advantages of laser and vision inspection, which meet the requirements for accuracy and efficiency in on-line inspection. Based on the measurement principle of the line laser sensor and vision camera, a model of the measurement system was established; a standard block was designed to calibrate the system. The surface data of tooth flank were acquired by laser scanning and evaluated to analyze the accuracy. The result of method was validated by comparison with the gear measurement center. Both are of good agreement. Sufficient experiments verify the feasibility of proposed method for on-line inspection.

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Section: Repeatability Of Methodsmentioning

confidence: 99%

A method combining laser and vision detection for on-line measurement of small modules gears

Yu,

Li,

Sun

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Kuznetsov et al successfully rectified the image distortion introduced by the prism [25], and 3D measurement accuracy was optimized by including the measurement error estimation into the optical design stage [26]. These research results promoted the development of this system and enabled it to be successfully applied in a variety of engineering fields [27,28].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental study on a new reconstruction model based on geometric optics for a single-lens biprism-based stereovision system

Wang

2022

Meas. Sci. Technol.

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In present work, we report a stereovision system with one single camera. The configuration has only one single camera in front of which a biprism is placed. A new mathematical model based on optical geometrical optics is proposed for single-lens biprism-based stereovision system in this paper. The path of each ray in 3D space is tracked precisely, and the intersection of the rays is determined by optimization method. Under the assumption of pinhole imaging, the 3D coordinate of measuring point can be obtained through this model. And the model has been examined and verified by experiment. The experimental results show that the mathematical model can effectively measure the depth of measuring points and relative distance between measuring points. The deviation between the reconstruction results of measuring point and the real 3D coordinate shows certain regularity with the changing of the distance between the measuring point and the camera.

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A method for enhanced polymer spur gear inspection based on 3D optical metrology

et al. 2021

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Compact stereoscopic prism-based optical system with an improved accuracy of 3-D geometrical measurements

Cited by 9 publications

References 9 publications

A method combining laser and vision detection for on-line measurement of small modules gears

A method combining laser and vision detection for on-line measurement of small modules gears

Theoretical and experimental study on a new reconstruction model based on geometric optics for a single-lens biprism-based stereovision system

A method for enhanced polymer spur gear inspection based on 3D optical metrology

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