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Photonics
Special Issues
Precision Measurement and Perception: Enabled by Advanced Optical Sensing, Imaging,...
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Precision Measurement and Perception: Enabled by Advanced Optical Sensing, Imaging, and LiDAR Technologies

A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Lasers, Light Sources and Sensors".

Deadline for manuscript submissions: 15 September 2026 | Viewed by 1162

Editors

Dr. Zhaodong Chen

E-Mail Website
Guest Editor
National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China
Interests: optics; laser; LiDAR and remote sensing; LiDAR data processing; optical imaging and optical system; optical measurement; single-photon detection; applied physics
Dr. Yajun Pang

E-Mail Website
Guest Editor
Hebei Key Laboratory of Advanced Laser Technology and Equipment, School of Electronic and Information Engineering, Hebei University of Technology, Tianjin 300401, China
Interests: applied optics; spectrometers; diffraction; optics and lasers; optics and photonics; laser technology; interferometry; optical sensing; convolutional neuronal network; imaging
Dr. Huaiyu Cui

E-Mail Website
Guest Editor
National Key Laboratory of Laser Spatial Information, School of Aeronautics, Harbin Institute of Technology, Harbin 150001, China
Interests: extreme ultraviolet; laser processing; laser imaging
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Precision measurement and perception play an important role in many fields and have achieved rapid development in the past decade. The advancement of methods and technologies, as well as the creativity of researchers, have brought about numerous new advances, applications, and achievements

The aim of this Special Issue is to gather contributions from research groups worldwide in order to get an overview of the current status of theory and applications of Precision Measurement and Perception.

Topics would include: measurement method, perception technology, optical sensing, imaging, LiDAR, advanced laser source, image processing methods, technological processes, experimental testing and innovative applications,

Dr. Zhaodong Chen
Dr. Yajun Pang
Dr. Huaiyu Cui
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Photonics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • measurement method
  • perception technology
  • LiDAR
  • imaging
  • advanced laser source
  • image processing
  • optical sensing

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Published Papers (2 papers)

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Research

20 pages, 8064 KB  
Article
Centroid Extraction Method Based on Multi-Scale Gaussian Fitting and Subpixel Edge Reconstruction
by Bing Han, Yuanzhang Song, Zhijing Fang, Hangyu Yue, Hongtao Ma, Yuegang Fu and Jian Song
Photonics 2026, 13(6), 594; https://doi.org/10.3390/photonics13060594 - 18 Jun 2026
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Abstract
Accurate spot-centroid localization is fundamental for determining optical metrics such as modulation transfer function (MTF) and effective focal length (EFL). Conventional methods struggle under non-ideal conditions—asymmetric spots, high noise, and vibration—and mid-wave infrared (MWIR) vibration has received little attention. To address these gaps, [...] Read more.
Accurate spot-centroid localization is fundamental for determining optical metrics such as modulation transfer function (MTF) and effective focal length (EFL). Conventional methods struggle under non-ideal conditions—asymmetric spots, high noise, and vibration—and mid-wave infrared (MWIR) vibration has received little attention. To address these gaps, we propose multi-scale Gaussian fitting with subpixel edge reconstruction (MSGF-SER), combining image pyramid fitting, Zernike-moment edge extraction, and adaptive eccentricity-weighted fusion. Validated on simulated spots with varying SNRs and experimental sequences (visible off-axis aberration, long-wave infrared (LWIR) high-noise, MWIR micro-vibration), MSGF-SER achieved a noise-free RMSE of 0.03 pixel and 0.84 pixel at 5 dB SNR. On real MWIR vibration sequences, the Y-direction standard deviation (STD) dropped to 0.098 pixel, and the trajectory displacement variance was more than an order of magnitude lower than that of conventional methods. MTF deviations remained within 0.01, and the deviation of the measured mean EFL from the nominal focal length was better than 0.05 mm, and the STD was below 0.02 mm. These results demonstrate that MSGF-SER substantially improves centroid localization accuracy, repeatability, and smoothness under challenging conditions, providing reliable support for high-precision optical system parameter measurement. Full article
(This article belongs to the Special Issue Precision Measurement and Perception: Enabled by Advanced Optical Sensing, Imaging, and LiDAR Technologies)
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13 pages, 2290 KB  
Article
Research on Kinematic Error of Pendulum Interferometer Based on Optomechanical Coupled Simulation
by Zhijie Wu, Dacheng Li, Wei Xiong, Wenpeng Liu, Zhicheng Cao and Yangyu Li
Photonics 2026, 13(3), 270; https://doi.org/10.3390/photonics13030270 - 11 Mar 2026
Viewed by 441
Abstract
To address the issue of normal displacement deviation induced by the geometric nonlinearity of cross-spring flexural pivots in pendulum-type interferometers, which leads to modulation attenuation, this study proposes a co-simulation method combining Finite Element Analysis (FEA) and Physical Optics. First, an optomechanical model [...] Read more.
To address the issue of normal displacement deviation induced by the geometric nonlinearity of cross-spring flexural pivots in pendulum-type interferometers, which leads to modulation attenuation, this study proposes a co-simulation method combining Finite Element Analysis (FEA) and Physical Optics. First, an optomechanical model was established based on the retroreflective property of cube-corner prisms and a double-pendulum differential scanning architecture (where the optical path difference is four times the mechanical displacement). Using the ANSYS Workbench 2022 R1 transient dynamics module with the “Large Deflection” algorithm enabled, the nonlinear motion trajectories of single-pivot and dual-pivot flexural hinges were quantitatively compared. Subsequently, a multi-physics data mapping interface was established to map mechanical motion errors into a physical optics simulation model, where the interference modulation was accurately calculated via electromagnetic field tracing. Results demonstrate that under ambient temperature (25 °C) and a spectral resolution of 1 cm−1, the normal displacement deviation of the single-pivot hinge is only 0.00165 mm, representing a 95.6% reduction compared to the dual-pivot structure (0.03765 mm). Furthermore, the modulation of the single-pivot structure remains above 0.98 throughout the scanning range, significantly outperforming the nonlinear decay characteristic of the dual-pivot structure. These findings provide a theoretical basis for the structural optimization and selection of high-precision portable FTIR spectrometers. Full article
(This article belongs to the Special Issue Precision Measurement and Perception: Enabled by Advanced Optical Sensing, Imaging, and LiDAR Technologies)
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