Accuracy characterization of Shack–Hartmann sensor with residual error removal in spherical wavefront calibration

He, Yi; Bao, Mingdi; Chen, Yiwei; Ye, Hong; Fan, Jinyu; Shi, Guohua

doi:10.37188/lam.2023.036

Cited by 6 publications

(1 citation statement)

References 24 publications

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“…Ophthalmoscopy adopting adaptive optics technology presents an ideal method with cellular resolution for studying the pathological development, disease progression, and therapeutic effectiveness of retinal diseases in vivo [5][6][7][8][9]. Accurate wavefront detection is the basis for achieving high-resolution images with adaptive optics technology [9][10][11]. The Shack-Hartman wavefront sensor (SHWS) is the most widely used instrument for ocular wavefront detection [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Optics Methods to Rat Eye Properties: Impact of Pupil Diameter on Wavefront Detection

Kong,

Huang,

et al. 2024

Photonics

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Achieving a high-quality wavefront sensing light spot and accurate wavefront estimation of the rat eye is still challenging due to its large ocular aberrations and the back reflections from fundus multilayer. Simulation and experiments of rat eye wavefront sensing are conducted to improve the quality of sensing spot for accurate wavefront estimation. The simulation results show that a smaller pupil diameter leads to a high quality of wavefront sensing light spot, and the model rat eye reaches diffractive limitation when the pupil diameter is 0.8 mm. However, the experimental results indicate a different conclusion. Consistent with the simulation results, the quality of the sensing light spot significantly improves when the pupil diameter decreases from 3.6 mm to 1.8 mm. The full width at half maximum (FWHM) of the sensing light spots decreases from 77.36 ± 8.95 μm to 26.78 ± 3.25 μm, and the calculated Strehl ratio increases from 0.007 to 0.396. As the pupil diameter continues to decrease to 1.2 mm, the sensing spot and calculated Strehl ratio continue to improve, while the detected low-order aberrations exhibit a significant increase in both value and variance. This observation suggests that using a half-filled pupil for rat wavefront detection may be a more favorable choice, which assists in obtaining high-resolution retinal images in the rat eye using adaptive optics technology.

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Section: Introductionmentioning

confidence: 99%

Adaptive Optics Methods to Rat Eye Properties: Impact of Pupil Diameter on Wavefront Detection

Kong,

Huang,

et al. 2024

Photonics

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A novel insulation space charge non-contact measurement method based on elasto-optical sensing and ellipsometric detection

Gao,

Qi,

Ren

et al. 2025

Measurement

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Enhancing precision in table tennis officiating through an optimized autonomous sensor node system

Sun,

Khishe

2024

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PurposeThe purpose of the study is to address concerns regarding the subjectivity and imprecision of decision-making in table tennis refereeing by developing and enhancing a sensor node system. This system is designed to accurately detect the points on the table tennis table where balls collide. The study introduces the twined-reinforcement chimp optimization (TRCO) framework, which combines two novel approaches to optimize the distribution of sensor nodes. The main goal is to reduce the number of sensor units required while maintaining high accuracy in determining the locations of ball collisions, with error margins significantly below the critical 3.5 mm cutoff. Through complex optimization procedures, the study aims to improve the efficiency and reliability of decision-making in table tennis refereeing by leveraging sensor technology.Design/methodology/approachThe study employs a design methodology focused on developing a sensor array system to enhance decision-making in table tennis refereeing. It introduces the twined-reinforcement chimp optimization (TRCO) framework, combining dual adaptive weighting strategies and a stochastic approach for optimization. By meticulously engineering the sensor array and utilizing complex optimization procedures, the study aims to improve the accuracy of detecting ball collisions on the table tennis table. The methodology aims to reduce the number of sensor units required while maintaining high precision, ultimately enhancing the reliability of decision-making in the sport.FindingsThe optimization research study yielded promising outcomes, showcasing a substantial reduction in the number of sensor units required from the initial count of 60 to a more practical 49. The sensor array system demonstrated excellent accuracy in identifying the locations of ball collisions, with error margins significantly below the critical 3.5 mm cutoff. Through the implementation of the twined-reinforcement chimp optimization (TRCO) framework, which integrates dual adaptive weighting strategies and a stochastic approach, the study achieved its goal of enhancing the efficiency and reliability of decision-making in table tennis refereeing.Originality/valueThis study introduces novel contributions to the field of table tennis refereeing by pioneering the development and optimization of a sensor array system. The innovative twined-reinforcement chimp optimization (TRCO) framework, integrating dual adaptive weighting strategies and a stochastic approach, sets a new standard for sensor node distribution in sports technology. By substantially reducing the number of sensor units required while maintaining high accuracy in detecting ball collisions, this research offers practical solutions to address the inherent subjectivity and imprecision in decision-making processes. The study’s originality lies in its meticulous design methodology and complex optimization procedures, offering significant value to the field of sports technology and officiating.

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Accuracy characterization of Shack–Hartmann sensor with residual error removal in spherical wavefront calibration

Cited by 6 publications

References 24 publications

Adaptive Optics Methods to Rat Eye Properties: Impact of Pupil Diameter on Wavefront Detection

Adaptive Optics Methods to Rat Eye Properties: Impact of Pupil Diameter on Wavefront Detection

A novel insulation space charge non-contact measurement method based on elasto-optical sensing and ellipsometric detection

Enhancing precision in table tennis officiating through an optimized autonomous sensor node system

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