Infrared Physics & Technology最新文献_第10页

SiamTU: Hyperspectral video tracking against appearance changes using improved SiameGAT with adaptive template updating SiamTU：使用改进的带有自适应模板更新的SiameGAT对外观变化进行高光谱视频跟踪

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-19 DOI: 10.1016/j.infrared.2025.105811

Jialing Chen , Kun Qian , Wei Song , Yonghao Qiu , Shiqing Wang

{"title":"SiamTU: Hyperspectral video tracking against appearance changes using improved SiameGAT with adaptive template updating","authors":"Jialing Chen , Kun Qian , Wei Song , Yonghao Qiu , Shiqing Wang","doi":"10.1016/j.infrared.2025.105811","DOIUrl":"10.1016/j.infrared.2025.105811","url":null,"abstract":"<div><div>Siamese-based tracking algorithms are gaining popularity in hyperspectral tracking because of their effectiveness in feature matching. Nevertheless, these techniques require refinement to handle significant variations in the target’s appearance, including deformation, occlusion, and small size, more effectively. Therefore, we propose the SiamTU (SiameGAT with Template Updating) tracker, which includes band selection, an improved graph attention based Siamese model, and an adaptive template update mechanism, using public hyperspectral videos. Initially, a band selection technique employing the neighborhood group normalized filter is utilized to obtain three high-significance bands. The resultant synthesized image is then used as the input for the tracker. Following this, a module for efficient feature refinement is developed to improve the features that have been encoded. The model has the ability to simultaneously concentrate on both local details and overall structures by extracting features from the input at various scales. Moreover, an embedded template update network enhances the SiamTU’s capability referring to appearance changes effectively. Results from tests on the hyperspectral dataset reveal that SiamTU is more effective than comparable algorithms, attaining a success rate of 0.617 and a precision value of 0.939. The code will be accessible at <span><span>https://github.com/ctb2/SiamTU</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105811"},"PeriodicalIF":3.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Spacecraft damage infrared detection for hypervelocity impact based on multi-objective optimal clustering algorithm 基于多目标最优聚类算法的航天器超高速碰撞损伤红外检测

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-17 DOI: 10.1016/j.infrared.2025.105810

Yan Gao , Chun Yin , Xuegang Huang , Jiuwen Cao , Sara Dadras , Anhua Shi , Junyang Liu

引用次数: 0

A long working distance optical microscope for synchrotron infrared and Raman microspectroscopy 用于同步加速器红外和拉曼显微光谱的长工作距离光学显微镜

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-16 DOI: 10.1016/j.infrared.2025.105818

Jiluan Zhang , Shiyu Xie , Liangxin Qiao, Chuansheng Hu, Hengjie Liu, Zeming Qi

{"title":"A long working distance optical microscope for synchrotron infrared and Raman microspectroscopy","authors":"Jiluan Zhang , Shiyu Xie , Liangxin Qiao, Chuansheng Hu, Hengjie Liu, Zeming Qi","doi":"10.1016/j.infrared.2025.105818","DOIUrl":"10.1016/j.infrared.2025.105818","url":null,"abstract":"<div><div>A long working distance optical microscope was developed at the infrared beamline on National Synchrotron Radiation Laboratory to address the increasing demand infrared microspectroscopy under external fields (temperature, pressure etc.) and in-situ/operando conditions. This microscope is configured with a pair of 15 × Schwarzschild objectives with 45 mm working distance and a numerical aperture (NA) of 0.5 for transmission and reflection infrared micro-spectrum measurements. The utilization of a high-brightness synchrotron infrared light source ensures the attainment of diffraction-limited spatial resolution along with an excellent signal-to-noise ratio. In addition, the system integrates a Raman microscope, allowing for combined infrared and Raman microspectroscopic measurements without reloading the sample, ensuring that measurements are made under the same sample conditions. The versatile optical microscope offers a powerful tool for combining synchrotron infrared and Raman microspectroscopy measurements of microscale samples under various external fields such as high pressure, low temperature, as well as in-situ/operando chemical reactions. Consequently, it provides a flexible research platform for the study of condensed matter physics, energy and catalysis, materials science, geology, polymer and other related research fields.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105818"},"PeriodicalIF":3.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Preparation and properties of Se-Te binary chalcogenide glass 硒-碲二元硫系玻璃的制备及性能研究

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-15 DOI: 10.1016/j.infrared.2025.105813

Junfeng Xu, Na Li, Ting Shi, Zhenting Liu

{"title":"Preparation and properties of Se-Te binary chalcogenide glass","authors":"Junfeng Xu, Na Li, Ting Shi, Zhenting Liu","doi":"10.1016/j.infrared.2025.105813","DOIUrl":"10.1016/j.infrared.2025.105813","url":null,"abstract":"<div><div>Se-Te binary glass, as a fundamental component of chalcogenide glass, determines the properties of many glasses. However, there are few reports on this glass. In this study, the physical properties of Se<sub>100-x</sub>Te<sub>x</sub> glass were investigated by X-ray diffraction, Raman spectra, Infrared transmittance, UV visible spectra, DSC thermal, TMA thermal expansion and nanoindentation analyses. The result shows that the Se<sub>100-x</sub>Te<sub>x</sub> glass had high infrared transmittance (>54 %) in the range of 2–17.45 μm. The cut-off wavelength of Se<sub>100-x</sub>Te<sub>x</sub> glass at short-infrared and far-infrared are 850 nm and 20.68 μm, respectively. As Te content increases, the short-wave cutoff wavelength shifts towards the long-wave direction; the glass transition temperature <em>T</em><sub>g</sub> increases from 44.2 °C to 51.3 °C. The thermal expansion coefficient of the liquid α<sub>L</sub> and the solid α<sub>g</sub> decrease with Te content, which improve the dimensional stability of glass. Nanoindentation test shows that the hardness increases from 0.59 GPa to 1.02 GPa, while the elastic modulus increases from 11.9 GPa to 16.1GPa with Te content.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105813"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Spacing adjustable and switchable multi-wavelength Erbium-doped fiber laser based on the parallel filter of photonic crystal fibers and polarization hole burning effect 基于光子晶体光纤平行滤波器和偏振孔燃烧效应的间距可调、可切换多波长掺铒光纤激光器

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-14 DOI: 10.1016/j.infrared.2025.105814

Ali Salah Mahdi, Sarah Kadhim Al-Hayali, Abdulhadi Al-Janabi

{"title":"Spacing adjustable and switchable multi-wavelength Erbium-doped fiber laser based on the parallel filter of photonic crystal fibers and polarization hole burning effect","authors":"Ali Salah Mahdi, Sarah Kadhim Al-Hayali, Abdulhadi Al-Janabi","doi":"10.1016/j.infrared.2025.105814","DOIUrl":"10.1016/j.infrared.2025.105814","url":null,"abstract":"<div><div>Polarization hole burning (PHB) is an important approach widely used to generate multi-wavelength output in erbium-doped fiber laser (EDFL). In this work, we demonstrated a potential approach for multi-wavelength EDFL generation based on a parallel filter and the PHB effect. The parallel filter comprises two in-line Mach-Zehnder interferometers (MZIs) namely (MZI-1 and MZI-2) which are parallel connected between two 3-dB optical fiber couplers (OCs). Here, MZI-1 consists of a segment of non-linear photonic crystal fiber (NLPCF) fused spliced between two single mode fibers (SMFs). MZI-2 was realized by the core-offset fusion splicing of a piece of an NLPCF between two SMFs. The core offset technique in NLPCF splicing enabled the manipulation of the optical path difference between the two arms of the parallel filter. The two MZIs configured as parallel filters were initially utilized as transmission spectrum filters to simultaneously generate dual-wavelength EDFL at 1530.4 and 1525.6 nm. Then, the proposed parallel filter, when combined with polarization controllers (PCs), produces the PHB effect, which reduces mode competition and allows for spacing adjustment and switchable multi-wavelength operation. The free spectral range (FSR) of the parallel filter can be altered among single, dual, triple, and quadruple wavelengths by adjusting the PC1 incorporated within the ring cavity. The spacing adjustable wavelength operation can subsequently be modified from 1.2 to 5 nm by altering the FSR of MZI-2, which was accomplished by adjusting PC2 embedded in the MZI-2 arm. The results indicate that the proposed parallel filter offers a potential candidate for stable, switchable, and controllable generation of multi-wavelength EDFL.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105814"},"PeriodicalIF":3.1,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Surface temperature and emissivity assessment in an enclosed cavity at high temperature using IR thermography 利用红外热成像技术评估封闭腔体在高温下的表面温度和发射率

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-13 DOI: 10.1016/j.infrared.2025.105815

Rodrigue Beaini , Fabien Dupont , Antoine Dumont , Etienne Robert , Jolanta Klemberg-Sapieha , Ludvik Martinu

{"title":"Surface temperature and emissivity assessment in an enclosed cavity at high temperature using IR thermography","authors":"Rodrigue Beaini , Fabien Dupont , Antoine Dumont , Etienne Robert , Jolanta Klemberg-Sapieha , Ludvik Martinu","doi":"10.1016/j.infrared.2025.105815","DOIUrl":"10.1016/j.infrared.2025.105815","url":null,"abstract":"<div><div>Assessing emissivity and temperature using IR thermography is challenging, particularly at high temperatures. Moreover, in an enclosed cavity, the multiple reflections of the signal before reaching the camera can lead to a geometry-dependent apparent increase in emissivity. In this work, we describe a novel approach for solving this problem in the context of measurements within a model aircraft engine combustion chamber. By using thermocouples and a multi-spectral camera, we experimentally validate our radiometric model for the cavity. We first show how to evaluate the amplification factor of a cavity using numerical tools, and we then use these results to apply corrections on the camera signals for in-band radiance (IBR) measurements. As a non-invasive and non-destructive technique, this approach can be used to monitor in real time the evolution of the temperature and emissivity over a large temperature range. As a specific example, we present and compare values measured by the camera and thermocouples inside the combustion chamber. Following the calibration step, we determine the emissivity and temperature distribution of the entire scene. The calculations are compared across 3 different wavebands to ensure their validity, with a difference lower than 2 %. Finally, we showcase the importance of assessing the <em>in situ</em> emissivity of a surface, which can change drastically with a large temperature variation and in a harsh environment. Using a calibration point given by a carefully placed thermocouple, the 2D temperature mapping of the whole scene is evaluated and compared in two different wavebands, leading to temperatures within <span><math><mrow><mi>Δ</mi><mi>T</mi><mo>=</mo><msup><mrow><mn>10</mn></mrow><mn>0</mn></msup><mi>C</mi></mrow></math></span> across the wavebands when the combustion chamber is at 700℃.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105815"},"PeriodicalIF":3.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Infrared radiation characteristics of heterogeneous granite fracture under compression 非均质花岗岩压缩破裂的红外辐射特征

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-13 DOI: 10.1016/j.infrared.2025.105816

Hai Sun , Zhenrui Wang , Yu Fu , Liqiang Ma , Changyan Shi , Hongli Li , Chun Fu

{"title":"Infrared radiation characteristics of heterogeneous granite fracture under compression","authors":"Hai Sun , Zhenrui Wang , Yu Fu , Liqiang Ma , Changyan Shi , Hongli Li , Chun Fu","doi":"10.1016/j.infrared.2025.105816","DOIUrl":"10.1016/j.infrared.2025.105816","url":null,"abstract":"<div><div>Infrared thermal imaging monitoring technology currently cannot accurately characterize the changes in rock internal structural damage, which remains a scientific problem requiring further investigation in modern rock mechanics. To address this issue, this paper takes granite as the research object. The indoor infrared thermal imaging monitoring of granite under uniaxial loading conditions and numerical simulation experiments of uniaxial compression in heterogeneous granite using the finite difference software FLAC<sup>3D</sup> were conducted. The quantitative relationship between surface damage variables and internal damage variables at different loading stages of granite is established. Specifically, the relationship is exponential during the plastic deformation stage, while in the failure stage, the relationship becomes parabolic, characterized by a simultaneous surge phenomenon in both types of damage. Furthermore, the quantitative relationship between infrared radiation temperature and principal stress is established, revealing that the correlation between infrared radiation temperature and principal stress is a positive linear relationship with a linear correlation coefficient exceeding 0.95. Finally, this research combines numerical simulations of the rock fracture process with infrared thermal imaging monitoring. On this basis, a new interactive method that integrates infrared thermal imaging and numerical simulation for rock fracture analysis is proposed.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105816"},"PeriodicalIF":3.1,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nd-doped mode-locked fiber laser with dispersion management for conventional soliton generation 采用色散管理的掺nd锁模光纤激光器用于常规孤子的产生

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-12 DOI: 10.1016/j.infrared.2025.105812

Yongming Yang, Ping Li, Ming Li, Bin Zhang, Haoyuan Li, Xiaohan Chen

引用次数: 0

Infrared thermography to assess the drying process of building materials 用红外热成像技术评价建筑材料的干燥过程

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-12 DOI: 10.1016/j.infrared.2025.105808

Leticia C.M. Dafico , Ricardo M.S.F. Almeida , Romeu Vicente , Vasco P. de Freitas , Eva Barreira

{"title":"Infrared thermography to assess the drying process of building materials","authors":"Leticia C.M. Dafico , Ricardo M.S.F. Almeida , Romeu Vicente , Vasco P. de Freitas , Eva Barreira","doi":"10.1016/j.infrared.2025.105808","DOIUrl":"10.1016/j.infrared.2025.105808","url":null,"abstract":"<div><div>Moisture is a pathology that affects not only the aesthetic appearance of buildings but also compromises indoor environmental conditions and the structural strength of building components and materials. Therefore, proper diagnosis and prevention of moisture damage are of paramount importance to guarantee the durability of the building and the comfort of the users. Infrared thermography is a technique that enables the identification of the surface temperature of building elements and has good potential for moisture analysis since changes in moisture content relate to changes in surface temperature. However, the correlation between the variables that influence the hygrothermal behaviour is still a critical drawback that must be addressed. This paper presents the results of laboratory tests conducted to assess the correlation between the thermal gradient between the wet and dry zones of building materials and the respective moisture content. The results showed that quadratic models performed well in predicting the moisture content for building materials with high porosity. Additionally, using IRT to assess the drying behaviour of building materials presented a reliable approach of identifying the moisture content.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105808"},"PeriodicalIF":3.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Glioma grade discrimination based on class imbalance learning with terahertz spectral data 基于班级不平衡学习的太赫兹光谱神经胶质瘤分级识别

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-09 DOI: 10.1016/j.infrared.2025.105809

Xianhao Wu , Rui Tao , Zhiyan Sun , Tianyao Zhang , Shaowen Zheng , Yuan Yuan , Xingyue Li , Can Cao , Zhaohui Zhang , Dabiao Zhou , Xiaoyan Zhao , Pei Yang

{"title":"Glioma grade discrimination based on class imbalance learning with terahertz spectral data","authors":"Xianhao Wu , Rui Tao , Zhiyan Sun , Tianyao Zhang , Shaowen Zheng , Yuan Yuan , Xingyue Li , Can Cao , Zhaohui Zhang , Dabiao Zhou , Xiaoyan Zhao , Pei Yang","doi":"10.1016/j.infrared.2025.105809","DOIUrl":"10.1016/j.infrared.2025.105809","url":null,"abstract":"<div><div>Grading gliomas is crucial for prognosis and survival prediction. Clinically, gliomas are categorized into low-grade gliomas (LGG, WHO II) and high-grade gliomas (HGG, WHO III and IV). Compared to traditional diagnostic methods, terahertz spectroscopy offers advantages such as time efficiency and label-free detection. In this study, we propose a machine learning model for discriminating glioma grades based on terahertz spectral data, incorporating, for the first time, the class imbalance of terahertz spectral data from different glioma grades. A total of 420 sample data from 21 cases were included. Three data processing methods—ROS, RUS, and SMOTE—were utilized, and three classifiers were employed to construct the model. We compared the effects of the three data processing methods and validated the proposed method on a test set. The best performance of the proposed algorithm, evaluated by the area under the curve (AUC), achieved a maximum value of 88.8%. This represents a significant advancement in the development of a rapid glioma grade diagnostic tool and provides more effective guidance for developing surgical protocols for gliomas.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105809"},"PeriodicalIF":3.1,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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