Optics and Lasers in Engineering最新文献

Total variation extrapolation algorithm for high-fidelity terahertz in-line digital holography 高保真太赫兹在线数字全息的全变分外推算法

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-11 DOI: 10.1016/j.optlaseng.2025.109048

Yiming Liu , Feifan Fan , Jiawen Li , Binjie Ji , Lu Rong , Lei Ge , Hang Zhao , Yishi Shi , Dayong Wang , Min Wan

{"title":"Total variation extrapolation algorithm for high-fidelity terahertz in-line digital holography","authors":"Yiming Liu , Feifan Fan , Jiawen Li , Binjie Ji , Lu Rong , Lei Ge , Hang Zhao , Yishi Shi , Dayong Wang , Min Wan","doi":"10.1016/j.optlaseng.2025.109048","DOIUrl":"10.1016/j.optlaseng.2025.109048","url":null,"abstract":"<div><div>In-line digital holography offers the advantages of compact layout and full utilization of the spatial bandwidth product of the detector, making it widely used in the terahertz band. In this paper, we propose an extrapolated iterative algorithm that combines the object's absorption characteristics with the sparsity of the complex field, enabling high-fidelity retrieval of both amplitude and phase images from a single in-line hologram. At the same time, the size of the hologram is numerically expanded without increasing the system complexity or the data acquisition time. The effectiveness of this algorithm is demonstrated through high-quality imaging of a Siemens star, polypropylene sheet, and dragonfly hindwing. Compared with the phase retrieval algorithm which includes positive absorption constraint, extrapolation method and support domain constraint, our method achieves superior reconstruction quality and more effective twin-image suppression, enhancing the resolution from 310 μm (2.6<em>λ</em>) to 228 μm (1.9<em>λ</em>) and enabling high-fidelity reconstruction of a 30 μm dragonfly hindwing. This work will further enhance the application of continuous-wave terahertz in-line digital holography in biomedical imaging and non-destructive testing.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109048"},"PeriodicalIF":3.5,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advanced 3D AR display based on custom-designed asymmetric holographic microlens array with high fill factor 基于定制设计的高填充系数非对称全息微透镜阵列的先进3D AR显示

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-10 DOI: 10.1016/j.optlaseng.2025.109060

Anar Khuderchuluun , Hui-Ying Wu , Munkh-Uchral Erdenebat , Tuvshinjargal Amgalan , Ki-Chul Kwon , Erkhembaatar Dashdavaa , Young-Seok Kim , Nam Kim

{"title":"Advanced 3D AR display based on custom-designed asymmetric holographic microlens array with high fill factor","authors":"Anar Khuderchuluun , Hui-Ying Wu , Munkh-Uchral Erdenebat , Tuvshinjargal Amgalan , Ki-Chul Kwon , Erkhembaatar Dashdavaa , Young-Seok Kim , Nam Kim","doi":"10.1016/j.optlaseng.2025.109060","DOIUrl":"10.1016/j.optlaseng.2025.109060","url":null,"abstract":"<div><div>This study presents a novel approach for enhancing three-dimensional (3D) augmented reality (AR) displays through the custom-designed asymmetric holographic microlens array (A-HMA). The A-HMA is specifically designed to enhance the performance of AR display system by balancing spatial resolution, field of view (FOV), and fill factor. It ensures uniform diffraction for a solid volumetric beam profile while maintaining a smooth 3D effect. During the fabrication process, a computer-generated hologram (CGH) pattern of the concave phase profile is generated and employed in conjunction with fully automated holographic wavefront printing. The digitally computed microlens function is sequentially recorded onto a single thin HOE plate through holographic wavefront printing at the precise micro-scale, ensuring a high fill factor and uniformity, both of which are essential for high-quality AR visualization. The asymmetrical structure of the hexagonal hogel layout, precisely fabricated via the holographic wavefront printing system, enhances both packing density and angular coverage, thereby contributing to improved light efficiency and spatial sampling performance. For seamless and realistic 3D scene reconstruction, a hexagonal elemental image array is generated using a direction-inversed propagation algorithm based on computer-generated integral imaging. This algorithm is optimized for the fabricated A-HMA, ensuring efficient computation and accurate reconstruction of real-world objects in the AR display. The proposed 3D AR system successfully reconstructs volumetric 3D scenes with high clarity, providing an immersive AR experience. Experimental results validate the effectiveness of this system, demonstrating its potential for next-generation AR display applications.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109060"},"PeriodicalIF":3.5,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High modulation depth, ultra-compact, and tunable electro-optical modulator based on dielectric-loaded graphene-plasmonic waveguides 基于介电负载石墨烯等离子波导的高调制深度、超紧凑、可调谐电光调制器

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-09 DOI: 10.1016/j.optlaseng.2025.109059

Saima Kanwal , Ali M. Abdulsada , Mir Hamid Rezaei

{"title":"High modulation depth, ultra-compact, and tunable electro-optical modulator based on dielectric-loaded graphene-plasmonic waveguides","authors":"Saima Kanwal , Ali M. Abdulsada , Mir Hamid Rezaei","doi":"10.1016/j.optlaseng.2025.109059","DOIUrl":"10.1016/j.optlaseng.2025.109059","url":null,"abstract":"<div><div>In this study, we propose a novel ultra-compact, tunable electro-optical (EO) modulator based on dielectric-loaded graphene-plasmonic waveguides (DLGPW). By leveraging the exceptional optical and electrical properties of graphene, the modulator achieves high modulation depth (<em>MD</em>) and extinction ratio (<em>ER</em>) for operation in the mid-infrared (MIR) region. The device utilizes surface plasmon polaritons (SPPs) excited at the graphene-dielectric interface, enabling strong light confinement and low propagation losses. By adjusting the chemical potential of graphene through an external voltage, the refractive index of graphene is tuned, allowing for precise control over the resonant wavelength and modulation characteristics. Through detailed numerical simulations using the three-dimensional finite-difference time-domain (3D-FDTD) method, we demonstrate that the proposed modulator achieves an <em>MD</em> of 98.69%, an <em>ER</em> of 18.835 dB, and <em>IL</em> of 2.5 dB, with a modulation bandwidth of 1.13 THz. The ultra-compact design and compatibility with CMOS technology make the proposed modulator a promising candidate for next-generation photonic systems, particularly in applications requiring high-speed and efficient modulation in MIR spectral ranges.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109059"},"PeriodicalIF":3.5,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A hybrid framework for low-frequency multiple interference fringe suppression in TDLAS based on feature extraction and machine learning 基于特征提取和机器学习的TDLAS低频多干涉条纹抑制混合框架

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-09 DOI: 10.1016/j.optlaseng.2025.109058

Dongdong Pang , Yaojie Jia , Weikai Hu , Rendi Wu , Peng Liu , Xin Zhou

{"title":"A hybrid framework for low-frequency multiple interference fringe suppression in TDLAS based on feature extraction and machine learning","authors":"Dongdong Pang , Yaojie Jia , Weikai Hu , Rendi Wu , Peng Liu , Xin Zhou","doi":"10.1016/j.optlaseng.2025.109058","DOIUrl":"10.1016/j.optlaseng.2025.109058","url":null,"abstract":"<div><div>To address low-frequency multiple interference fringe noise caused by etalon effects in tunable diode laser absorption spectroscopy (TDLAS), this study introduces a hybrid denoising method that uses a feature informed neural network (FINN). This method innovatively integrates the Gramian angular field (GAF), principal component analysis (PCA), and uniform manifold approximation and projection (UMAP) techniques to efficiently extract both linear and nonlinear features of absorption spectra signals. Additionally, a feature construction module is introduced into a traditional backpropagation neural network (BPNN), significantly enhancing its ability to suppress low-frequency noise. Numerical simulations and experimental results show that the FINN performs excellently in complex noise environments, reducing the maximum absolute error by a factor of 3 compared with that of the BPNN and by >31 times compared with that of the least squares (LS) method. With an integration time of 242 s, the methane (CH<sub>4</sub>) detection precision reached 0.331 ppm, fully validating the high accuracy and stability of the proposed approach. This method provides a novel technical approach for low-frequency noise suppression in noncontact optical measurements, with broad application prospects in gas detection, environmental monitoring, and related fields.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109058"},"PeriodicalIF":3.5,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of absolute wide-range blood flow by deep learning-based laser speckle contrast imaging 基于深度学习的激光散斑对比成像估计绝对大范围血流量

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-08 DOI: 10.1016/j.optlaseng.2025.109056

Kai Jing Shang , Yuan Yuan , Hong Li Liu , Ren Bing Wang , Wei Nan Gao , Yong Bi , Yang Yu

{"title":"Estimation of absolute wide-range blood flow by deep learning-based laser speckle contrast imaging","authors":"Kai Jing Shang , Yuan Yuan , Hong Li Liu , Ren Bing Wang , Wei Nan Gao , Yong Bi , Yang Yu","doi":"10.1016/j.optlaseng.2025.109056","DOIUrl":"10.1016/j.optlaseng.2025.109056","url":null,"abstract":"<div><div>Laser speckle contrast imaging (LSCI) has been widely applied for blood flow measurements, while it is limited to obtain relative blood flow index (rBFI) rather than real blood speed in terms of mm/s due to its reliance on device parameters, static scattering noise and blood cells’ dynamic scattering type. Thus, the way that blood flow is estimated by LSCI model has not yet formed a standard, and its wide application is hindered, especially comparative experiments could hardly conduct among multiple conditions in biomedical researches. In this study, we developed a deep learning-based laser speckle contrast imaging model (DL-LSCI) to predict absolute blood flow through learning the distinct spatiotemporal frequency characteristics of speckle patterns from varying blood flow. Both phantom and <em>in vivo</em> experiments are performed. It demonstrates that our model enables to predict the blood flow within the widest, to best of our knowledge, absolute speed range of 0–231 mm/s under different static scattering noises in phantom experiments, as well as the varying blood flow in rat carotid artery occlusion/recovery model <em>in vivo</em>. The accuracies exceed 96 % and 92 %, separately. The study extends the LSCI device’s function in the absolute regional blood flow imaging free from the imaging system characteristics, extending the LSCI’s applications in studies where there is no baseline data and in comparative studies among animals. That would help to promote the LSCI technique becoming a standard quantitative imaging method to visualize the spatiotemporal evolution of blood flow in coronary artery bypass grafting.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109056"},"PeriodicalIF":3.5,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Single-lens computational imaging system design for coupled aberration of blur and distortion 模糊与畸变耦合像差的单透镜计算成像系统设计

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-08 DOI: 10.1016/j.optlaseng.2025.109050

Rongshuai Zhang , Fanjiao Tan , Zongling Li , Zaiwu Sun , Changjian Yang , Qingyu Hou

{"title":"Single-lens computational imaging system design for coupled aberration of blur and distortion","authors":"Rongshuai Zhang , Fanjiao Tan , Zongling Li , Zaiwu Sun , Changjian Yang , Qingyu Hou","doi":"10.1016/j.optlaseng.2025.109050","DOIUrl":"10.1016/j.optlaseng.2025.109050","url":null,"abstract":"<div><div>Blur and distortion are the primary degradation effects caused by optical aberrations in imaging systems. Traditionally, researchers often treat these two effects as independent issues, leading to separate investigations on deblurring and distortion correction algorithms. However, large field of view (FOV) infrared single-lens systems frequently exhibit coupled aberrations, where blur amplifies distortion and distortion exacerbates image information loss. In such cases, conventional methods often lead to significant optical model deviations and poor restoration performance. To address this issue, we propose an optical coupled imaging model based on point spread function (PSF) peak position mapping, which simulates these coupled effects and enhances the accuracy of large-FOV single-lens imaging simulation. Additionally, we propose a one-step restoration algorithm for coupled aberrations to simultaneously correct both blur and distortion. Our coupled imaging model is established using differentiable methods, enabling the formation of an end-to-end framework for optical, deblurring, and distortion correction parameters. Through a series of comparative experiments conducted with 40°-80° FOV and the fabrication of a prototype lens with a 19mm focal length, we demonstrate that our method significantly improves image quality in large-FOV single-lens systems and achieves high-resolution imaging in the 8–14μm infrared band.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109050"},"PeriodicalIF":3.5,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

OAM optical fiber transmission with reduced bit error rate based on turbo code encoding/decoding and deep learning demodulation 基于turbo码编解码和深度学习解调的低误码率OAM光纤传输

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-07 DOI: 10.1016/j.optlaseng.2025.109061

Junbao Hu , Hanyu Pan , Xutao Mo , Dong Wang , Xianshan Huang , Yu Lei

{"title":"OAM optical fiber transmission with reduced bit error rate based on turbo code encoding/decoding and deep learning demodulation","authors":"Junbao Hu , Hanyu Pan , Xutao Mo , Dong Wang , Xianshan Huang , Yu Lei","doi":"10.1016/j.optlaseng.2025.109061","DOIUrl":"10.1016/j.optlaseng.2025.109061","url":null,"abstract":"<div><div>Deep learning-assisted OAM optical fiber transmission has become a hotspot because of its end-to-end and high-accurate demodulation characteristics. Recent studies report that nearly 100% recognition rate of demodulation can be achieved, but the actual bit error rate (BER) of data transmission is not very low. In order to maintain a high-accurate demodulation with high-fidelity transmission performance, we propose a feasible scheme that combines turbo code encoding/decoding and deep learning demodulation for OAM optical fiber communications. In the scheme, a turbo code encoder/decoder is designed as a bit error corrector and a pre-trained deep learning model is induced as an OAM mode demodulator, which ensures the high-accurate demodulation performance of OAM and the high-fidelity data transmission with reduced BER of the system. To verify the proposed scheme, we experimentally built an OAM optical fiber transmission system and transmitted a 256-grayscale image based on the system. A recognition rate of 99.69% and a transmission BER of 1.32 × 10<sup>–3</sup> demonstrate the excellent performance. In addition, better transmission performance can be achieved when combined with an improved OAM mapping strategy. Our scheme can be a new perspective for high-performance OAM fibre transmission.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109061"},"PeriodicalIF":3.5,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flight strain measurement of helicopter rotor blade flaps using fiber grating 用光纤光栅测量直升机旋翼襟翼的飞行应变

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-07 DOI: 10.1016/j.optlaseng.2025.109037

Jiahong Zheng , Weizhen Cheng , Shuaike Jiao , Xide Li

{"title":"Flight strain measurement of helicopter rotor blade flaps using fiber grating","authors":"Jiahong Zheng , Weizhen Cheng , Shuaike Jiao , Xide Li","doi":"10.1016/j.optlaseng.2025.109037","DOIUrl":"10.1016/j.optlaseng.2025.109037","url":null,"abstract":"<div><div>Traditional electrical strain gauges face limitations in rotor blade applications due to complex wiring, susceptibility to electromagnetic interference susceptibility, and reliability issues. This study presents a Fiber Bragg Grating (FBG) based in-flight strain measurement system that overcomes these challenges by leveraging the FBG sensors' compactness, electromagnetic immunity, and suitability for distributed measurements of FBG sensors. A key innovation is the direct integration of the system into the rotor hub without slip rings or optical connectors, which significantly simplifying simplifies deployment and enhancing enhances robustness. Comparative validation against electrical strain gauges and theoretical models on an equal-strength beam confirmed the accuracy of FBG measurements. Ground and flight tests on a helicopter demonstrated real-time, interference-free strain measuring during blade elastic deformation, with FBG data closely aligning closely with conventional gauge results. Critically, the system’s installation did not affect helicopter performance, as confirmed by pilot evaluations. Furthermore, analysis of blade flap strain trends under diverse flight conditions provides valuable insights for blade design optimization. This work advances rotor blade monitoring by establishing a reliable, lightweight solution for complex electromagnetic environments, addressing critical gaps in existing strain measurement methodologies.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109037"},"PeriodicalIF":3.5,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co-phase error detection of segmented mirrors based on polarization-multiplexing multi-wavelength dynamic interferometry 基于偏振复用多波长动态干涉的分段反射镜共相误差检测

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-06 DOI: 10.1016/j.optlaseng.2025.109031

Yicen Ma , Qun Yuan , Ziyan Teng , Weijian Liu , Zhishan Gao

{"title":"Co-phase error detection of segmented mirrors based on polarization-multiplexing multi-wavelength dynamic interferometry","authors":"Yicen Ma , Qun Yuan , Ziyan Teng , Weijian Liu , Zhishan Gao","doi":"10.1016/j.optlaseng.2025.109031","DOIUrl":"10.1016/j.optlaseng.2025.109031","url":null,"abstract":"<div><div>The performance of large-aperture telescopes of segmented mirrors is primarily determined by the co-phase metrics among segmented mirrors. This paper proposes a novel method, based on polarization-multiplexing multi-wavelength dynamic interferometry, to measure co-phase errors of segmented mirrors. This method merges two light sources into the orthogonally polarized beams serving as test and reference beams. These beams are regrouped before being recorded, allowing two polarization cameras to respectively record the interferograms at different wavelengths. Consequently, this approach enables simultaneous work for two light sources in a single optical path without crosstalk. By integrating spatial phase shifting, two polarization cameras each capture four phase-shifted interferograms in a single shot. The analysis of error amplification due to environmental disturbance demonstrated the superior environmental insensitivity capability of the proposed method. The feasibility of the proposed method was validated using the experimentally constructed interferometer, which adjusted the piston error of the two segmented mirrors from 40.6 μm to 9.73 nm. This approach minimizes errors caused by environmental disturbance and eliminates the need for high-speed response hardware and their mutual synchronization, offering an effective and economical solution for addressing co-phase errors in large-aperture telescopes of segmented mirrors.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109031"},"PeriodicalIF":3.5,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing polarization contrast of skin of PS-OCT using an image integration method 利用图像积分法增强PS-OCT皮肤偏振对比

IF 3.5 2区工程技术

Optics and Lasers in Engineering Pub Date : 2025-05-06 DOI: 10.1016/j.optlaseng.2025.109052

Ying Chang

{"title":"Enhancing polarization contrast of skin of PS-OCT using an image integration method","authors":"Ying Chang","doi":"10.1016/j.optlaseng.2025.109052","DOIUrl":"10.1016/j.optlaseng.2025.109052","url":null,"abstract":"<div><div>Multiple polarization parameters analysis methods directly lead to the problem of information redundancy and poor readability. Improving polarization image contrast and reducing redundant image information is a direct way to improve the efficiency of polarization information analysis. In this study, we investigate the two methods of the light propagation model and the exploration of the one unique form of canonical decomposition to obtain an integration method of the multiple polarization parameters (IMMPP). By combination of the expressions of 14 parameters, six 1st integrated parameters of axis, amplitude, and the components of degree of depolarization, and three 2nd integrated parameters of dichroism, birefringence, and depolarizance are derived and expressed. Ex vivo skin of a healthy mouse is imaged by PS-OCT, and images of integrated parameters are calculated. The results show that the 1st integrated parameters can be used for preliminary and large-scale monitoring of sample status, revealing several features with well contrast, and the 2nd integrated parameters can be used for small-range and efficient identification of sample local characteristics, retaining the advantage of high contrast, make up for the defect of blurred imaging at deeper depths with better contrast in the imaging depth. This approach is expected to support efficient and accurate disease diagnosis.</div></div>","PeriodicalId":49719,"journal":{"name":"Optics and Lasers in Engineering","volume":"193 ","pages":"Article 109052"},"PeriodicalIF":3.5,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0