Optics and Laser Technology最新文献_第10页

Light field depth estimation based on sub-pixel displacement and multi-directional pixel gradient 基于亚像素位移和多向像素梯度的光场深度估计

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-17 DOI: 10.1016/j.optlastec.2025.113892

Hongbo Zhang, Xuanwei Liu, Wenjie Lai, Donglai Li, Daming Wang, Ziji Liu

{"title":"Light field depth estimation based on sub-pixel displacement and multi-directional pixel gradient","authors":"Hongbo Zhang, Xuanwei Liu, Wenjie Lai, Donglai Li, Daming Wang, Ziji Liu","doi":"10.1016/j.optlastec.2025.113892","DOIUrl":"10.1016/j.optlastec.2025.113892","url":null,"abstract":"<div><div>Depth estimation based on light field imaging techniques has significant application value in industrial defect detection and medical imaging fields. Researchers have continuously developed and optimized algorithms such as epipolar plane images (EPI), multi-view stereo matching, and digital refocusing to achieve high-accuracy depth estimation. In recent years, neural network-based approaches also exhibit excellent performance in synthetic datasets, although these methods still face significant challenges such as efficiency, generalization capability, robustness, and precision for realistic applications. In this paper, we propose a method that combines sub-pixel disparity displacement and multi-directional pixel gradient symmetry to calculate the depth information. Specifically, we employed the stereoscopic interpolation for high-accuracy refocused imaging sequence regeneration, and achieved depth estimation by analyzing the symmetry of pixel gradients. To further optimize the algorithm’s performance, we introduce a four-direction evaluation to handle occlusion scenarios, which greatly improves confidence results from <span><math><mn>87.05</mn><mspace></mspace><mi>%</mi></math></span> @ single direction to <span><math><mn>94.17</mn><mspace></mspace><mi>%</mi></math></span>. From comparative experiments, the proposed method obtains more accurate estimation results than the classical conventional algorithms. Meanwhile, it also demonstrates much better generalization capabilities and speed in real world images compared to the recently reported neural network-based approaches.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113892"},"PeriodicalIF":5.0,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Influence of laser power on microstructure and performance of Ti6Al4V fabricated through coaxial wire-laser directed energy deposition using six laser beams 激光功率对六束同轴线激光定向能沉积Ti6Al4V显微组织和性能的影响

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-17 DOI: 10.1016/j.optlastec.2025.113901

Benyin Zhu , Fangda Xu , Jingren Zhi , Xianwen Yang , Shengxing Zhi , Tiechui Yuan , Ruidi Li

{"title":"Influence of laser power on microstructure and performance of Ti6Al4V fabricated through coaxial wire-laser directed energy deposition using six laser beams","authors":"Benyin Zhu , Fangda Xu , Jingren Zhi , Xianwen Yang , Shengxing Zhi , Tiechui Yuan , Ruidi Li","doi":"10.1016/j.optlastec.2025.113901","DOIUrl":"10.1016/j.optlastec.2025.113901","url":null,"abstract":"<div><div>Wire-based directional energy deposition (DED) technology offers high deposition efficiency. However, the inherent melting and solidification conditions can result in uneven deposition and the formation of coarse columnar β grains with distinct solidification textures, leading to significant mechanical anisotropy. Coaxial wire-laser directed energy deposition (CWL-DED) employs a coaxial laser head featuring a ring arrangement of six laser beams, which facilitates vertical wire feeding and effectively mitigates challenges related to deposition direction and microstructure. Building on single bead experiments, a study was conducted to investigate the effects of laser power (ranging from 700 W to 1000 W) on the microstructure and mechanical properties of the three-dimensional blocks. The matrix primarily consists of an acicular α phase. As laser power increases, the length of the α phase extends from 11.0 μm to 18.0 μm. At lower laser power settings, a basketweave structure is observed, while higher laser power induces the formation of Widmanstätten side plates. This transition is attributed to a reduced thermal gradient and the nucleation of heterogeneous particles, resulting in a shift of the matrix from columnar to equiaxed β grains. The region of columnar grains expands with increasing laser power, and the grain size increases from 210-498 μm to 437–742 μm. The ultimate tensile strength of Ti6Al4V reaches a maximum of 947 MPa with an elongation of 18.4 % at 800 W, demonstrating relatively low mechanical anisotropy. This study establishes a foundational process for the preparation of titanium alloys using CWL-DED with six laser beams, addressing the existing gap in research regarding the microstructure and mechanical properties of Ti6Al4V produced using this technology.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113901"},"PeriodicalIF":5.0,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Optical diagnostic studies of breast and thyroid cancers based on mueller matrix and vortex beams 基于穆勒矩阵和涡旋光束的乳腺癌和甲状腺癌光学诊断研究

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-17 DOI: 10.1016/j.optlastec.2025.113875

Kangle Yong , Meiling Duan , Bo Tang , Hongfei Wang , Yamei Luo

{"title":"Optical diagnostic studies of breast and thyroid cancers based on mueller matrix and vortex beams","authors":"Kangle Yong , Meiling Duan , Bo Tang , Hongfei Wang , Yamei Luo","doi":"10.1016/j.optlastec.2025.113875","DOIUrl":"10.1016/j.optlastec.2025.113875","url":null,"abstract":"<div><div>This study analyzes the detection of thyroid and breast cancer using the <span><math><mrow><msub><mi>m</mi><mn>44</mn></msub></mrow></math></span> element of the Mueller matrix. The results indicate that for thyroid cancer, the diagnostic accuracy of the <em>L</em> singular line surpasses that of the <em>C</em> point, whereas for breast cancer, the <em>C</em> point demonstrates superior diagnostic precision. Furthermore, the study examines the transmission characteristics of a right-handed circularly polarized vortex beam with a topological charge of 4 in both breast cancer and normal breast tissues. Experimental data reveal that the attenuation of the vortex beam is significantly lower in breast cancer tissue compared to normal breast tissue. The attenuation coefficients derived from the simulations are in close agreement with the experimental data, thus verifying the rationality of the optical parameters of the breast cancer tissue. Further analysis suggests that as the topological charge increases, the attenuation coefficient of the vortex beam decreases, indicating that beams with higher topological charges have enhanced penetrating abilities. However, during beam transmission, the intensity scintillation index is higher in breast cancer tissue compared to normal tissue, suggesting that the beam is more affected by local structural heterogeneities in cancerous tissue. As the topological charge increases, the scintillation index decreases, implying that beams with higher topological charges exhibit greater resistance to turbulence in biological tissues. These findings propose that analyzing the optical characteristics of vortex beams could provide effective methods for breast cancer diagnosis and establish a theoretical foundation for future research in optical imaging and biomedical detection.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113875"},"PeriodicalIF":5.0,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

High-precision 3D crystal axis orientation measurement in uniaxial crystals via frequency-domain weak measurement with phase compensation 基于相位补偿的频域弱测量技术实现了单轴晶体的高精度三维晶体轴向测量

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-17 DOI: 10.1016/j.optlastec.2025.113878

Wanshou Sun , Hexiang Li , Baili Qiu , Liang Guo , Yafei Yu , Qingmao Zhang

{"title":"High-precision 3D crystal axis orientation measurement in uniaxial crystals via frequency-domain weak measurement with phase compensation","authors":"Wanshou Sun , Hexiang Li , Baili Qiu , Liang Guo , Yafei Yu , Qingmao Zhang","doi":"10.1016/j.optlastec.2025.113878","DOIUrl":"10.1016/j.optlastec.2025.113878","url":null,"abstract":"<div><div>Weak measurement is an effective approach for detecting small phase shifts. In this work, a method is proposed for determining the three-dimensional orientation of the optical axis in uniaxial crystals, based on frequency-domain weak measurement. The <span><math><mi>C</mi></math></span>-axis orientation is decomposed into a transverse azimuthal angle <span><math><mi>χ</mi></math></span> (in the plane perpendicular to the optical axis) and a longitudinal cut angle <span><math><mi>θ</mi></math></span> (along the optical axis), and quantitative relationships are established between these angles and the induced phase shifts. By leveraging the weak-value amplification effect, small phase variations are transformed into measurable spectral shifts, enabling decoupled measurements of <span><math><mi>χ</mi></math></span> and <span><math><mi>θ</mi></math></span>. The angular resolution for <span><math><mi>χ</mi></math></span> is <span><math><mn>1.9</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>3</mn></mrow></msup><mspace></mspace><msup><mrow></mrow><mo>∘</mo></msup></math></span>, and the phase resolution for <span><math><mi>θ</mi></math></span> is <span><math><mn>2.5</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>5</mn></mrow></msup><mspace></mspace><mrow><mtext>rad</mtext></mrow></math></span>. Furthermore, a phase compensation strategy was validated and successfully applied to large cut angle measurements, extending the dynamic range while maintaining high sensitivity. Excellent consistency is observed in repeated measurements of cut angles across four selected sapphire crystals. This approach provides a non-destructive, high-precision solution for crystal processing quality evaluation, offering new possibilities for optimizing polarization-sensitive devices.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113878"},"PeriodicalIF":5.0,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Coherent phonon excitation in multiphonon-coupled lasing beyond the fluorescence spectrum 荧光光谱以外多声子耦合激光中的相干声子激发

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-16 DOI: 10.1016/j.optlastec.2025.113932

Huichen Si, Fei Liang, Dazhi Lu, Haohai Yu, Huaijin Zhang, Yicheng Wu

{"title":"Coherent phonon excitation in multiphonon-coupled lasing beyond the fluorescence spectrum","authors":"Huichen Si, Fei Liang, Dazhi Lu, Haohai Yu, Huaijin Zhang, Yicheng Wu","doi":"10.1016/j.optlastec.2025.113932","DOIUrl":"10.1016/j.optlastec.2025.113932","url":null,"abstract":"<div><div>Electronic transitions in crystalline solids are typically accompanied by the generation or annihilation of phonons, the quantized modes of lattice vibrations. As the number of involved phonons increases, multiphonon-assisted photoluminescence diminishes and eventually becomes undetectable in the fluorescence spectrum, making it unsuitable for conventional lasing prediction based on fluorescence analysis. This study introduces a theoretical model for a multiphonon-coupled (MPC) laser that operates beyond the fluorescence spectral range by incorporating coherent phonon excitations. By considering the spectral overlap between the lasing transition and phonon modes, a quantitative expression for the stimulated emission cross-section is derived, demonstrating an enhancement of up to ten orders of magnitude compared to cases without coherent phonon involvement. The proposed framework enables significant wavelength extension, with tunable emission around 1100 nm and a maximum emission wavelength of 1311 nm observed in three Yb<sup>3+</sup>-doped crystals. This approach offers a robust theoretical basis for describing and realizing MPC laser action in conventional crystalline materials beyond their intrinsic fluorescence limits.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113932"},"PeriodicalIF":5.0,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145094776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Spectral attention and visionmamba difference guided network for hyperspectral image change detection 高光谱图像变化检测的光谱关注和视觉曼巴差分引导网络

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-16 DOI: 10.1016/j.optlastec.2025.113869

Hongmin Gao, Jiyuan Li, Zhonghao Chen, Shufang Xu

{"title":"Spectral attention and visionmamba difference guided network for hyperspectral image change detection","authors":"Hongmin Gao, Jiyuan Li, Zhonghao Chen, Shufang Xu","doi":"10.1016/j.optlastec.2025.113869","DOIUrl":"10.1016/j.optlastec.2025.113869","url":null,"abstract":"<div><div>Transformer-based and CNN-based approaches have achieved significant success in hyperspectral image change detection (HSI-CD) in recent times. However, traditional CNN-based methods treat all extracted features equally and primarily focus on local features, which to some extent limits detection speed and accuracy. Although transformers can provide a global receptive field, they suffer from high computational complexity and pay insufficient attention to the correlation of change information across different spectral bands. In contrast, the Mamba architecture based on State Space Models (SSM) combines efficient long-sequence modeling with linear computational costs, demonstrating great potential in feature detection for low-dimensional scenarios.Building on this, this paper proposes a lightweight spectral attention and Visionmamba difference-guided network(SAVDGN) for hyperspectral image change detection. We integrate CNNs with Mamba and design the network with the aim of highlighting change information. Its goal is to extract change information from both spatial and spectral dimensions, generating highly discriminative differences. The network utilizes CNNs to hierarchically extract rich spatial features from bi-temporal images, while leveraging spectral attention and Visionmamba to generate spectral differences between the two images at different network layers. These spectral differences not only guide feature extraction in the next stage, but also support the final change decision. Compared with state-of-the-art HSI classification methods, experimental results demonstrate that SAVDGN achieves significant classification accuracy on three public HSI datasets and a superior reduction in model parameters and floating-point operations (FLOPs).</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113869"},"PeriodicalIF":5.0,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Advancements in ultrafast laser processing of carbon fiber reinforced plastics: mechanism, precision drilling, surface modification, and emerging applications 碳纤维增强塑料的超快激光加工进展：机理、精密钻孔、表面改性和新兴应用

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-15 DOI: 10.1016/j.optlastec.2025.113902

Sijia Liu, Fang Li, Pei Zuo, Hong Tian, Rongrong xu, Long Lv, Yizhuo Huo, YiFan Yuan, HaiRuo Rao

{"title":"Advancements in ultrafast laser processing of carbon fiber reinforced plastics: mechanism, precision drilling, surface modification, and emerging applications","authors":"Sijia Liu, Fang Li, Pei Zuo, Hong Tian, Rongrong xu, Long Lv, Yizhuo Huo, YiFan Yuan, HaiRuo Rao","doi":"10.1016/j.optlastec.2025.113902","DOIUrl":"10.1016/j.optlastec.2025.113902","url":null,"abstract":"<div><div>Carbon fiber reinforced plastic (CFRP) is a high-performance material that has become one of the most promising materials in modern high-end manufacturing. The advent of ultrafast laser technology has catalyzed significant research endeavors in the domain of carbon fiber reinforced plastic processing. This paper focuses on the ultrafast laser processing of carbon fiber-reinforced plastics, emphasizing the exploration of perforation and surface modification technologies. A comprehensive analysis of the mechanism of ultrafast laser processing of carbon fiber reinforced plastics is presented, encompassing the processes of light absorption, heat transfer, material removal, and the formation of micro-nano structures. The paper introduces a range of perforation methods and discusses their applications in aerospace and automotive manufacturing. In the domain of surface modification, the underlying reasons for modification are investigated, and novel applications are described. The paper demonstrates that femtosecond laser processing of carbon fiber-reinforced plastics holds considerable potential for enhancing processing quality and broadening the range of applications.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113902"},"PeriodicalIF":5.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Thermal-profile prediction of heat-affected zone for predictive control during laser cladding 激光熔覆过程热影响区的热剖面预测

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-15 DOI: 10.1016/j.optlastec.2025.113903

Jinyoung Kim , Gibeom Kim , Chang-Hee Yim , Jae-Eock Cho , Nam-Kyu Park , Deok-Su Yun , Tae-Gyu Lee , Rae-Hyung Chung , Dae-Geun Hong

{"title":"Thermal-profile prediction of heat-affected zone for predictive control during laser cladding","authors":"Jinyoung Kim , Gibeom Kim , Chang-Hee Yim , Jae-Eock Cho , Nam-Kyu Park , Deok-Su Yun , Tae-Gyu Lee , Rae-Hyung Chung , Dae-Geun Hong","doi":"10.1016/j.optlastec.2025.113903","DOIUrl":"10.1016/j.optlastec.2025.113903","url":null,"abstract":"<div><div>During the laser-cladding (LC) process on a metal substrate, the melt pool and the heat-affected zone (HAZ) can overheat; as a result cracks, pores, and thermal deformation develop in or near HAZ. A model predictive control (MPC) approach is a method to control process requirements by anticipating deviations from the goal. In this study, deep learning was used to develop a model (SimVP-LC) that uses a convolutional neural network to predict the thermal profile for MPC of the HAZ during the laser-cladding process. Thermal history data during the process were preprocessed to form images, remove unnecessary information, and correct for distortion. SimVP-LC can accurately predict the thermal profile of the entire substrate including the HAZ after up to 37 frames within a mean absolute error of 10 °C, whereas the average temperature of HAZ > 500 °C. A LC real-time monitoring system that uses MPC was developed and applied to actual experimental environments with WC40Ni powder on an S45C steel substrate. The width of the HAZ could be controlled below a certain level; consequently, the probability of crack creation was decreased. The model proposed here can be used for MPC to enable accurate control of the temperature and size of the HAZ during the LC process.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113903"},"PeriodicalIF":5.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The extreme performance of video snapshot compressive imaging under system noise constraints 视频快照压缩成像在系统噪声约束下的极限性能

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-15 DOI: 10.1016/j.optlastec.2025.113913

Yanxin Cai , Xing Liu , Zhibin Wang , Xun Liu , Wei Li , Guoqing Wang , Tianyu Li , Xin Yuan

{"title":"The extreme performance of video snapshot compressive imaging under system noise constraints","authors":"Yanxin Cai , Xing Liu , Zhibin Wang , Xun Liu , Wei Li , Guoqing Wang , Tianyu Li , Xin Yuan","doi":"10.1016/j.optlastec.2025.113913","DOIUrl":"10.1016/j.optlastec.2025.113913","url":null,"abstract":"<div><div>Video Snapshot Compressive Imaging (SCI) aims to capture high-speed scenes with low-speed cameras in a low-cost and low-bandwidth manner. Specifically, a high-speed scene is encoded by different modulation masks and then summed up to generate a snapshot compressed measurement which is finally captured by a traditional low-speed camera. Following this, reconstruction algorithms are correspondingly designed to retrieve the compressed dynamic scene. Existing video SCI reconstruction algorithms have achieved superior performance in the simulated testing data and real testing data with less noise. However, in the applications of real imaging systems, the existence of the intrinsic noise within detector results in the mismatch between the simulated and real imaging systems. Therefore, intrinsic noise and light intensity become the major challenges for video SCI reconstruction in the real cases. Bearing the above in mind, in this paper, we propose to integrate the intrinsic noise of the real imaging system into the whole reconstruction pipeline. More importantly, based on the noise-integrated framework, we evaluate the reconstruction performance under different light conditions and compression ratios. Experimental results show that with different signal-to-noise ratios, there exists an extreme performance bound that is lower than that of the noise-free condition. To verify the effectiveness of our proposed method, we build a real video SCI system and carefully calibrate its intrinsic noise. Following this, existing state-of-the-art reconstruction method EfficientSCI is used to present the reconstruction results. Introducing calibrated intrinsic noise significantly improves reconstruction quality under noisy and insufficient-light conditions, bringing performance close to that of a noise-free scenario. The proposed method has further been verified by the experimental results.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113913"},"PeriodicalIF":5.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

UMSPU: Universal multi-size phase unwrapping network via mutual self-distillation and adaptive boosting ensemble segmenter UMSPU：基于相互自蒸馏和自适应增强集成分割的通用多尺寸相位展开网络

IF 5 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-09-15 DOI: 10.1016/j.optlastec.2025.113916

Lintong Du , Huazhen Liu , Yijia Zhang , Shuxin Liu , Rongjun Shao , Yuan Qu , Jiamiao Yang

{"title":"UMSPU: Universal multi-size phase unwrapping network via mutual self-distillation and adaptive boosting ensemble segmenter","authors":"Lintong Du , Huazhen Liu , Yijia Zhang , Shuxin Liu , Rongjun Shao , Yuan Qu , Jiamiao Yang","doi":"10.1016/j.optlastec.2025.113916","DOIUrl":"10.1016/j.optlastec.2025.113916","url":null,"abstract":"<div><div>Phase unwrapping is a crucial step in various high-precision measurement techniques. Deep learning - based methods are widely studied due to their better noise resistance and speed. However, existing phase unwrapping networks are constrained by the receptive field range and sparse semantic information, making them unable to effectively process high-resolution images, which severely limits their application in practical scenarios. To address this issue, we propose a Mutual Self-Distillation (MSD) mechanism and an adaptive-boosting ensemble segmenter to construct a Universal Multi-Size Phase Unwrapping network (UMSPU). MSD realizes cross-layer supervised learning by optimizing the bidirectional Kullback–Leibler divergence of attention maps, ensuring the precise extraction of fine-grained semantic features across different resolutions. The adaptive boosting ensemble segmenter combines weak segmenters with different receptive fields into a strong segmenter, ensuring stable segmentation at different spatial frequencies. The proposed mechanisms help UMSPU break the resolution limitations of previous networks, increasing the applicable resolution range from 256 <span><math><mo>×</mo></math></span> 256 to 2048 <span><math><mo>×</mo></math></span> 2048 (a 64-fold increase). It also enables the network to achieve highly robust effects in cross-domain applications with a lightweight architecture, taking only 22.66 ms to process a high-resolution image. This will effectively help the deep learning-based phase unwrapping method advance from the scientific research level to the practical application level.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"192 ","pages":"Article 113916"},"PeriodicalIF":5.0,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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