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Photonics
Special Issues
Optical Imaging and Measurements: 2nd Edition
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Optical Imaging and Measurements: 2nd Edition

A special issue of Photonics (ISSN 2304-6732).

Deadline for manuscript submissions: 15 February 2025 | Viewed by 1882

Special Issue Editors

Dr. Zixin Zhao

E-Mail Website
Guest Editor
State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, China
Interests: computational optical imaging; interferometry; holography
Special Issues, Collections and Topics in MDPI journals
Dr. Feifei Gu

E-Mail Website
Guest Editor
Shenzhen Institute of Advanced Technology, CAS, Shenzhen, China
Interests: machine vision; computational 3D vision; structured light; optical image processing; optical measurement; dynamic reconstruction
Special Issues, Collections and Topics in MDPI journals
Dr. Gaopeng Zhang

E-Mail Website
Guest Editor
Xi'an Institute of Optics and Precision Mechanics, CAS, Xi’an, China
Interests: machine vision; optical measurement; optical image processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to present the 2nd edition of this Special Issue. An optical wave carries a large amount of information by modulating its amplitude, phase, polarization or coherence. As a result, different types of imaging and measurement techniques have been developed. Traditional optical imaging is two-dimensional, and thus, what you see is what you get. Modern optical imaging is multidimensional, meaning what you compute is what you get. Computational optical imaging restores image information by accurately characterizing multidimensional light fields and using advanced modulation and demodulation techniques. It provides a new way to break through the limitations of traditional imaging technology. A large number of exciting research developments are helping to continuously improve the performance of these optical imaging and measurement techniques under different situations. Hence, real-time imaging and dynamic measurements with high resolution and accuracy are increasingly becoming a reality.

The objectives of this Special Issue are to report on the advances in optical imaging and measurements. Topics of interest include, but are not limited to, the following:

  • Three-dimensional imaging;
  • Phase imaging;
  • Polarization imaging;
  • Computational optical imaging;
  • Optical coherence tomography;
  • Digital holography;
  • Speckle interferometry;
  • Optical triangulation measurements.

Dr. Zixin Zhao
Dr. Feifei Gu
Dr. Gaopeng Zhang
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 100 words) can be sent to the Editorial Office for announcement on this website.

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-blind 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

  • three-dimensional imaging
  • phase imaging
  • polarization imaging
  • computational optical imaging
  • optical coherence tomography
  • digital holography
  • speckle interferometry
  • optical triangulation measurements

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Related Special Issue

Published Papers (3 papers)

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Research

10 pages, 527 KiB  
Article
Computation of the Multi-Spheres Scattering Coefficient Using the Prime Index Method
by Fangcheng Huang, Carlo Santini, Fabio Mangini and Fabrizio Frezza
Photonics 2024, 11(12), 1155; https://doi.org/10.3390/photonics11121155 - 8 Dec 2024
Viewed by 387
Abstract
The analytical-numerical evaluation of the scattering of electromagnetic waves by multiple spheres requires the computation of numerous coefficients. For this purpose, many contributions, available in the literature, have traditionally employed the recursion method. In the present paper, we introduce a novel approach, based [...] Read more.
The analytical-numerical evaluation of the scattering of electromagnetic waves by multiple spheres requires the computation of numerous coefficients. For this purpose, many contributions, available in the literature, have traditionally employed the recursion method. In the present paper, we introduce a novel approach, based on primes and indices, which can be conveniently applied to the computation of the Wigner 3-j symbols, the Wigner D-function, and the Gaunt coefficients. By considering a series-expansion form, our method proves to be easily applicable to a variety of similar problems. We provide examples of coefficient calculations and compare the results with those retrieved from previous publications, demonstrating the advantages of our approach. Full article
(This article belongs to the Special Issue Optical Imaging and Measurements: 2nd Edition)
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24 pages, 7512 KiB  
Article
Color Reproduction of Chinese Painting Under Multi-Angle Light Source Based on BRDF
by Xinting Li, Jie Feng and Jie Liu
Photonics 2024, 11(11), 1089; https://doi.org/10.3390/photonics11111089 - 20 Nov 2024
Viewed by 459
Abstract
It is difficult to achieve high-precision color reproduction using traditional color reproduction methods when the angle is changed, and, for large-sized artefacts, it is also significantly difficult to collect a large amount of data and reproduce the colors. In this paper, we use [...] Read more.
It is difficult to achieve high-precision color reproduction using traditional color reproduction methods when the angle is changed, and, for large-sized artefacts, it is also significantly difficult to collect a large amount of data and reproduce the colors. In this paper, we use three Bidirectional Reflectance Distribution Function (BRDF) modeling methods based on spectral imaging techniques, namely, the five-parameter model, the Cook–Torrance model and the segmented linear interpolation model. We investigated the color reproduction of color chips with matte surfaces and Chinese paintings with rough surfaces under unknown illumination angles. Experiments have shown that all three models can effectively perform image reconstruction under small illumination angle intervals. The segmented linear interpolation model exhibits a higher stability and accuracy in color reconstruction under small and large illumination angle intervals; it can not only reconstruct color chips and Chinese painting images under any illumination angle, but also achieve high-quality image color reconstruction standards in terms of objective data and intuitive perception. The best test model (segmented linear interpolation) performs well in reconstruction, reconstructing Chinese paintings at 65° and 125° with an illumination angle interval of 10°. The average RMSE of the selected reference color blocks is 0.0450 and 0.0589, the average CIEDE2000 color difference is 1.07 and 1.50, and the SSIM values are 0.9227 and 0.9736, respectively. This research can provide a theoretical basis and methodological support for accurate color reproduction as well as the large-sized scientific prediction of artifacts at any angle, and has potential applications in cultural relic protection, art reproduction, and other fields. Full article
(This article belongs to the Special Issue Optical Imaging and Measurements: 2nd Edition)
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12 pages, 8091 KiB  
Article
Single-Shot Fringe Projection Profilometry Based on LC-SLM Modulation and Polarization Multiplexing
by Long Shu, Junxiang Li, Yijun Du, Chen Fan, Zirui Hu, Huan Chen, Hong Zhao and Zixin Zhao
Photonics 2024, 11(11), 994; https://doi.org/10.3390/photonics11110994 - 22 Oct 2024
Viewed by 654
Abstract
Fringe projection profilometry (FPP) is extensively utilized for the 3D measurement of various specimens. However, traditional FPP typically requires at least three phase-shifted fringe patterns to achieve a high-quality phase map. In this study, we introduce a single-shot FPP method based on common [...] Read more.
Fringe projection profilometry (FPP) is extensively utilized for the 3D measurement of various specimens. However, traditional FPP typically requires at least three phase-shifted fringe patterns to achieve a high-quality phase map. In this study, we introduce a single-shot FPP method based on common path polarization interferometry. In our method, the projected fringe pattern is created through the interference of two orthogonal circularly polarized light beams modulated by a liquid crystal spatial light modulator (LC-SLM). A polarization camera is employed to capture the reflected fringe pattern, enabling the simultaneous acquisition of four-step phase-shifting fringe patterns. The system benefits from advanced anti-vibration capabilities attributable to the common path self-interference optical path design. Furthermore, the utilization of a low-coherence LED light source results in reduced noise levels compared to a laser light source. The experimental results demonstrate that our proposed method can yield 3D measurement outcomes with high accuracy and efficiency. Full article
(This article belongs to the Special Issue Optical Imaging and Measurements: 2nd Edition)
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