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Journal of Modern Optics最新文献

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An EEMD-based method for removing residual blood oxygen signal noise by combining wavelet and singular spectrum analysis 结合小波和奇异谱分析，提出了一种基于eemd的残血氧信号噪声去除方法
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-01-19 DOI: 10.1080/09500340.2023.2183067
Zhiming Xing, Yan Cao, Xinzhi Shan, Lingyu Wang, Xiumin Gao
{"title":"An EEMD-based method for removing residual blood oxygen signal noise by combining wavelet and singular spectrum analysis","authors":"Zhiming Xing, Yan Cao, Xinzhi Shan, Lingyu Wang, Xiumin Gao","doi":"10.1080/09500340.2023.2183067","DOIUrl":"https://doi.org/10.1080/09500340.2023.2183067","url":null,"abstract":"Blood oxygen content plays an important role in clinical diagnosis and treatment. However, interference signals will be introduced in the process of the signal acquisition, which will affect the accuracy of measurement results. Although the filter can eliminate most of the interference, there will still be a part of the residual interference signal. In order to eliminate these residual interference, this paper proposes a signal denoising method based on ensemble empirical mode decomposition (EEMD), lifting wavelet transform (LWT) and singular spectrum analysis (SSA). Firstly, the measured signal is decomposed by EEMD to obtain multiple modal components (IMF). The high-frequency components are denoised by LWT, and then reconstructed with the low-frequency components. Finally, the SSA is carried out on the reconstructed signal, the appropriate components are selected to reconstruct the signal to obtain the final denoised signal. After testing the EEMD-LWT-SSA method with simulated and measured signals, it can be seen that the method can effectively suppress the residual noise in signals and improve the accuracy of data.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46779337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A dual-projector three-dimensional measurement model for shading problem of micro-scale object complex surface 微尺度物体复杂表面阴影问题的双投影三维测量模型
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-01-19 DOI: 10.1080/09500340.2023.2206928
Cheng Gui, Huikai Zhong, Yanjun Fu, Kejun Zhong, Baiheng Ma, Zhanjun Yan
{"title":"A dual-projector three-dimensional measurement model for shading problem of micro-scale object complex surface","authors":"Cheng Gui, Huikai Zhong, Yanjun Fu, Kejun Zhong, Baiheng Ma, Zhanjun Yan","doi":"10.1080/09500340.2023.2206928","DOIUrl":"https://doi.org/10.1080/09500340.2023.2206928","url":null,"abstract":"Considering the inherent defects of the traditional triangulation method, always a shadow area is produced in the image collected by the camera. In this work, based on the traditional monocular vision measurement system, an auxiliary light source was added to alleviate the shadow problem. Two symmetrical digital light processing (DLP) projectors were also employed to project the modulated monochrome red fringe patterns and the monochrome blue fringe patterns onto the object, whereas the distorted fringe patterns were captured by the colour camera. The image collected by the colour camera was separated, whereas the deformation fringe information of the measured object was obtained in the red channel and blue channel, respectively. Fusion of red and blue channels information to eliminate measurement shadows. From the experimental results, the root mean square error (RMSE) of the system was about 6µm, and this method can effectively solve the shadow problem in small object measurement.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43824841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
R2F-UGCGAN: a regional fusion factor-based union gradient and contrast generative adversarial network for infrared and visible image fusion R2F-UGCGAN:一种基于区域融合因子的联合梯度和对比度生成对抗网络，用于红外和可见光图像融合
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-01-02 DOI: 10.1080/09500340.2023.2174358
Yuning Xie, Gang Liu, Rui-long Xu, D. P. Bavirisetti, Haojie Tang, Mengliang Xing
{"title":"R2F-UGCGAN: a regional fusion factor-based union gradient and contrast generative adversarial network for infrared and visible image fusion","authors":"Yuning Xie, Gang Liu, Rui-long Xu, D. P. Bavirisetti, Haojie Tang, Mengliang Xing","doi":"10.1080/09500340.2023.2174358","DOIUrl":"https://doi.org/10.1080/09500340.2023.2174358","url":null,"abstract":"ABSTRACT To efficiently preserve texture and target information in source images, an image fusion algorithm of Regional Fusion Factor-Based Union Gradient and Contrast Generative Adversarial Network (R2F-UGCGAN) is proposed. Firstly, an adaptive gradient diffusion (AGD) decomposition algorithm is designed to extract representative features. A pair of infrared (IR) and visible (VIS) images are decomposed by AGD to obtain low-frequency components with salient targets and high-frequency components with rich edge gradient information. Secondly, In the high-frequency components, principal component analysis (PCA) is used for fusion to obtain more detailed images with texture gradients. R2F-UGCGAN is used to fuse the low-frequency components, which can effectively ensure good consistency between the target region and the background region. Therefore, a fused image is produced, which inherits more thermal radiation information and important texture details. Finally, subjective and objective comparison experiments are performed on TNO and RoadScene datasets with state-of-the-art image fusion methods. The experimental results of R2F-UGCGAN are prominent and consistent compared to these fusion algorithms in terms of both subjective and objective evaluation.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45605019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Investigation of p-polarized wave propagation through nonmagnetic chiral interfaces and slabs without and with dielectric loss p极化波通过无介质损耗和有介质损耗的非磁性手性界面和平板的传播研究
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-01-02 DOI: 10.1080/09500340.2023.2166137
A. Muntaser, Monish R. Chatterjee
{"title":"Investigation of p-polarized wave propagation through nonmagnetic chiral interfaces and slabs without and with dielectric loss","authors":"A. Muntaser, Monish R. Chatterjee","doi":"10.1080/09500340.2023.2166137","DOIUrl":"https://doi.org/10.1080/09500340.2023.2166137","url":null,"abstract":"ABSTRACT Wave propagation through a nonmagnetic achiral/chiral (ACC) interface (en route to chiral/achiral (CAC) interfaces and resonant slabs) is investigated in-depth using amplitude Fresnel coefficients (FCs). A p-polarized plane wave at the interface is tracked for rarer-to-denser configuration, followed by incidence at a CAC interface under stand-alone and ACC source interface conditions. Finally, a model involving a low-loss tangent chiral dielectric is examined by investigating the corresponding reflection and transmission behaviour. Detailed understanding of the (anomalous or normal) occurrence of total internal reflection (TIR), inverse total internal reflection (ITIR), evanescence, – and – based envelope decay and propagation across the modes in the longitudinal and transverse directions. A few sample simulations involving chiral slab resonators with p-polarization incidence are also presented. In ongoing follow-up work, dual lossy interfaces combined to create chiral resonators and arrays (in the thick or thin film regimes) will be investigated building upon the results presented here.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42972579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optical encryption using structural uncorrelated characteristics of biological scattering media 利用生物散射介质结构不相关特性的光学加密
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-01-02 DOI: 10.1080/09500340.2023.2183055
Aiping Zhai, Qing Han, Teng Zhang, Wenjing Zhao, Dong Wang
{"title":"Optical encryption using structural uncorrelated characteristics of biological scattering media","authors":"Aiping Zhai, Qing Han, Teng Zhang, Wenjing Zhao, Dong Wang","doi":"10.1080/09500340.2023.2183055","DOIUrl":"https://doi.org/10.1080/09500340.2023.2183055","url":null,"abstract":"ABSTRACT Inspired by the unique internal structures with inherent anisotropy in biological tissues and their dynamic scattering characteristic, a simple and easy-to-fabricate optical encryption technique using structural uncorrelated characteristics of biological tissues was proposed. It can generate unique keys with the random characteristics of the tissues and transforms multiple image plaintexts into speckle-like ciphertexts. The optical encryptions of grayscale images are demonstrated utilizing the uncorrelated characteristics of shallot and chicken breast respectively. Ciphertext-only-attack is resisted by phase retrieval due to the inherent dynamic randomness of biological tissues and the complexity of the plaintexts. Besides, once the unique PSF keys is recorded by the optical setup, the encryption can be accomplished, either online using the setup, or offline through performing convolutions on the plaintexts with pre-recorded uncorrelated PSFs to yield ciphertexts. Therefore, it is very secure, simple, and flexible to guarantee the promising potentials for information encryption of grayscale images and/or videos.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47194564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The off-axis moiré effect in double-layered cylinder 双层圆柱的离轴振动效应
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2023-01-02 DOI: 10.1080/09500340.2023.2166138
V. Saveljev
{"title":"The off-axis moiré effect in double-layered cylinder","authors":"V. Saveljev","doi":"10.1080/09500340.2023.2166138","DOIUrl":"https://doi.org/10.1080/09500340.2023.2166138","url":null,"abstract":"ABSTRACT The study presents the off-the-axis theory of the moiré patterns in a double-layered (coaxial) cylinder. The theory is based on the projected period and confirmed by the experiments with two devices. The results can be applied to moiré measurements, nanoparticles, and visual displays, particularly, to minimization of the moiré effect in curved/flexible displays (including 3D autostereoscopic displays).","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42428755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A multi-refraction-based 3D reconstruction method for underwater measurement with rotating scanning 一种基于多折射的水下测量旋转扫描三维重建方法
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2022-12-27 DOI: 10.1080/09500340.2022.2160021
Li Xu, Yonghao Zhou, Xin Zhao
{"title":"A multi-refraction-based 3D reconstruction method for underwater measurement with rotating scanning","authors":"Li Xu, Yonghao Zhou, Xin Zhao","doi":"10.1080/09500340.2022.2160021","DOIUrl":"https://doi.org/10.1080/09500340.2022.2160021","url":null,"abstract":"ABSTRACT This paper presents a novel reconstruction method based on multi-refraction to remedy the non-linear refraction, which recovers 3D geometry from 2D images. To simplify calibration, this paper prove that air calibration can replace underwater calibration. Finally, a multi-line rotating structured is designed to improve the measurement efficiency without additional equipment. The results of the clean water experiment show that the measurement accuracy is 1.91 mm within the 1000–2000 mm depth of field. The qualitative analysis demonstrates our method can reconstruct the surface topography of underwater U and N letter boards. In different Nephelometric Turbidity Unit (NTU) (as NTU = 0.156 mg/ml) environment, a circular plate with a diameter of 220 mm is measured, the shape reconstruction error (whether the reconstructed shape is a circular, square, or other) is 1.74 mm; the diameter measurement result is 218 mm, so the size error of the circular plate is 2 mm.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45832670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gamma-corrected, SNR-enhanced and sharpness-projection-based reconstruction approach for particle holography 基于伽玛校正、信噪比增强和清晰度投影的粒子全息重建方法
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2022-12-22 DOI: 10.1080/09500340.2022.2160022
Shengfu Li, Yu Zhao, Yan Ye
{"title":"Gamma-corrected, SNR-enhanced and sharpness-projection-based reconstruction approach for particle holography","authors":"Shengfu Li, Yu Zhao, Yan Ye","doi":"10.1080/09500340.2022.2160022","DOIUrl":"https://doi.org/10.1080/09500340.2022.2160022","url":null,"abstract":"ABSTRACT We report a Gamma-corrected, SNR-enhanced and sharpness-projection-based reconstruction approach for digital particle holography. In this approach, we mitigate the artefacts from off-focal planes by capturing three holograms with various illumination angles, and extract particle information by applying image processing to a high-quality maximum – sharpness-projection (MSP) image. This approach reinforces weak edges using a Gamma correction procedure, and segments particles from the MSP image by using a new hybrid threshold, which comprises both local and global features. Experimental results for nonspherical particles show that the reported approach can provide a high-quality MSP image, being less likely than the conventional method to be fooled by noise and more likely to retain particle features. The hybrid threshold helps in retaining fine features, separating neighbouring particles and differentiating particles from the background. For the large particles (>20 pixels), the diameter error is generally less than 10% while using the proposed automatic hybrid thresholding technique.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45720139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Sub-diffraction focusing of light by aperiodic masks 通过非周期掩模对光进行亚衍射聚焦
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2022-12-15 DOI: 10.1080/09500340.2022.2159083
S. Mostafavi, F. Nutku, Y. Ekşioğlu
{"title":"Sub-diffraction focusing of light by aperiodic masks","authors":"S. Mostafavi, F. Nutku, Y. Ekşioğlu","doi":"10.1080/09500340.2022.2159083","DOIUrl":"https://doi.org/10.1080/09500340.2022.2159083","url":null,"abstract":"Diffraction of a spherical wave through various types of 2D aperiodic hollow masks is investigated computationally. Unlike a periodic transmissive grating, an aperiodic hollow mask can focus light into a hotspot with sub-wavelength diameter. In this work, several types of 2D aperiodic hollow masks are investigated in the framework of sub-diffraction focusing of light and generating superoscillations at the hotspot region.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44056893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Laser array field correlations in underwater turbulence 水下湍流中激光阵列场的相关
IF 1.3 4区 物理与天体物理
Journal of Modern Optics Pub Date : 2022-12-15 DOI: 10.1080/09500340.2022.2159085
Y. Baykal, Y. Ata, M. Gökçe
{"title":"Laser array field correlations in underwater turbulence","authors":"Y. Baykal, Y. Ata, M. Gökçe","doi":"10.1080/09500340.2022.2159085","DOIUrl":"https://doi.org/10.1080/09500340.2022.2159085","url":null,"abstract":"In underwater turbulent medium, field correlations are found when the incidence is a laser beam array. Variations of the field correlations against the variations in the ring radius of laser array beam, number of beamlets composing the laser array, source size, underwater turbulence parameters, i.e. the ratio of temperature to salinity contributions to the refractive index spectrum, rate of dissipation of mean-squared temperature and rate of dissipation of kinetic energy per unit mass of fluid, are investigated. Field correlations of laser arrays are found to be larger than the field correlations of the single beams. The effect of underwater turbulence is to reduce the field correlation of laser arrays.","PeriodicalId":16426,"journal":{"name":"Journal of Modern Optics","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49201786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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