Infrared Physics & Technology最新文献

Dark current suppression of very long-wavelength p-on-n HgCdTe infrared detectors via optimizing absorber layer carrier concentration 通过优化吸收层载流子浓度抑制超长波长 p 对 n HgCdTe 红外探测器的暗电流

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-21 DOI: 10.1016/j.infrared.2025.105769

Xun Li, Xi Wang, Xiaohui Xie, Quanzhi Sun, Songmin Zhou, Zhikai Gan, Liqi Zhu, Yanfeng Wei, Chun Lin

{"title":"Dark current suppression of very long-wavelength p-on-n HgCdTe infrared detectors via optimizing absorber layer carrier concentration","authors":"Xun Li, Xi Wang, Xiaohui Xie, Quanzhi Sun, Songmin Zhou, Zhikai Gan, Liqi Zhu, Yanfeng Wei, Chun Lin","doi":"10.1016/j.infrared.2025.105769","DOIUrl":"10.1016/j.infrared.2025.105769","url":null,"abstract":"<div><div>In this study, the very long-wavelength (VLW) p-on-n HgCdTe devices with different absorber layer carrier concentration are fabricated and their dark current density versus voltage (J-V) characteristics are analyzed. The results show that suppression tunneling current is of great significance for VLW device, and reducing absorber layer carrier concentration is an feasible method. The influences of carrier concentration on dark current density are discussed further, considering the dependence of minority carrier lifetime on carrier concentration. It is found that the tunneling current and generation-recombination current are the dominant dark current mechanism respectively when the absorber layer carrier concentration is above and below 1.0 × 10<sup>15</sup> cm<sup>−3</sup>. The experiment and simulation results indicate that the n-type absorber layer with carrier concentration below 1.0 × 10<sup>15</sup> cm<sup>−3</sup> and high Shockley-Read-Hall (SRH) lifetime is beneficial for the preparation of low dark current VLW p-on-n HgCdTe devices.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105769"},"PeriodicalIF":3.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488330","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

Spectral-Spatial hyperspectral image classification based on hybrid of archimedes optimization algorithm and genetic algorithm with bitonic filter 基于阿基米德优化算法和遗传算法与比顿滤波器混合算法的光谱-空间高光谱图像分类法

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-20 DOI: 10.1016/j.infrared.2025.105788

Mohammed Abdulmajeed Moharram, Divya Meena Sundaram

{"title":"Spectral-Spatial hyperspectral image classification based on hybrid of archimedes optimization algorithm and genetic algorithm with bitonic filter","authors":"Mohammed Abdulmajeed Moharram, Divya Meena Sundaram","doi":"10.1016/j.infrared.2025.105788","DOIUrl":"10.1016/j.infrared.2025.105788","url":null,"abstract":"<div><div>Hyperspectral imaging (HSI) is widely utilized for its ability to capture detailed spectral information about objects’ physical and chemical properties. However, the high dimensionality of HSI data introduces challenges, including redundant, noisy, and highly correlated spectral bands, which can degrade classification performance. Effective feature selection is essential to mitigate these issues and address the Hughes phenomenon by retaining only the most informative bands. Metaheuristic optimization techniques have been widely applied for band selection, but they often face limitations such as premature convergence and local optima entrapment. To overcome these challenges, this study proposes a hybrid optimization method, AOA-GA, which integrates the Archimedes Optimization Algorithm (AOA) with the Genetic Algorithm (GA). This hybrid approach achieves a superior exploration–exploitation balance, enabling efficient global optimization and reducing the risk of local optima. Additionally, spatial features are incorporated during classification using the Bitonic Filter, enhancing overall accuracy. The proposed method is evaluated using two classifiers, Random Forest and Support Vector Machine, on three benchmark hyperspectral datasets: Indian Pines, Pavia University, and Salinas. Experimental results demonstrate that AOA-GA significantly outperforms state-of-the-art methods, showcasing its robustness, efficiency, and superior classification performance across diverse HSI datasets.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105788"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488329","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

Study on area-dependent multiplication region width and optimization of HgCdTe avalanche focal plane

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-20 DOI: 10.1016/j.infrared.2025.105781

Hao Xie , Hui Li , Liao Yang , Huijun Guo , Chuan Shen , Qinghua Liang , Yi Zhou , Lu Chen , Li He

{"title":"Study on area-dependent multiplication region width and optimization of HgCdTe avalanche focal plane","authors":"Hao Xie , Hui Li , Liao Yang , Huijun Guo , Chuan Shen , Qinghua Liang , Yi Zhou , Lu Chen , Li He","doi":"10.1016/j.infrared.2025.105781","DOIUrl":"10.1016/j.infrared.2025.105781","url":null,"abstract":"<div><div>Linear-mode HgCdTe avalanche photodiodes (APDs) have attracted significant attention due to their exceptionally low excess noise, operational bias ranging from −12 to 0 V, and linearly tunable gain. These characteristics suggest promising future applications in optical observations. The design of the multiplication region based on the PIN structure is critical, as it directly influences the photoelectric properties of the device, including gain and excess noise. This paper primarily investigates the effect of implanted areas on the multiplication region and examines area-related gain and noise characteristics of mid-wavelength infrared (MWIR) HgCdTe APDs at a temperature of 80 K. Studies conducted on diodes with varying implanted areas indicate that those with larger implanted areas create a wider multiplication region, which leads to lower gain and higher excess noise factors. Finally, 30 μm pitch 640 × 512 array HgCdTe APDs for cut-off wavelengths 4.8 µm at 80 K corresponding to compositions x<sub>Cd</sub> = 0.31 were fabricated. The number of noise bad pixels and the band-to-band tunneling (BBT) current have been significantly reduced due to the optimized the multiplication region width. Consequently, high-definition imaging under short integration times has been successfully achieved.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105781"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474369","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

CrBi2Te4-based mode-locked fiber laser with three switchable operating states

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-20 DOI: 10.1016/j.infrared.2025.105724

Chengda Ge , Yong Yao , Yu Yang , Linguang Guo , Songting Li , Haoxue Qiu , Chonghao Wu , Tianliang Liu , Jianan Duan , Xiaochuan Xu , Jiajun Tian

{"title":"CrBi2Te4-based mode-locked fiber laser with three switchable operating states","authors":"Chengda Ge , Yong Yao , Yu Yang , Linguang Guo , Songting Li , Haoxue Qiu , Chonghao Wu , Tianliang Liu , Jianan Duan , Xiaochuan Xu , Jiajun Tian","doi":"10.1016/j.infrared.2025.105724","DOIUrl":"10.1016/j.infrared.2025.105724","url":null,"abstract":"<div><div>In recent years, 2D materials have been widely used in the field of optoelectronics, and these 2D materials have further improved the performance of fiber lasers. CrBi<sub>2</sub>Te<sub>4</sub> is a member of the 2D material family known as topological insulators, featuring unique ferromagnetic properties and potential for saturation absorption. In this paper, we study the saturation absorption characteristics of CrBi<sub>2</sub>Te<sub>4</sub>-PVA nanosheets and CrBi<sub>2</sub>Te<sub>4</sub> D-type fibers, and verify their nonlinear absorption characteristics in erbium-doped fiber lasers. When CrBi<sub>2</sub>Te<sub>4</sub>-PVA nanosheets are used as SAs, 10th-order harmonic pulses with a pulse width of 765.1 fs are generated. Utilizing CrBi<sub>2</sub>Te<sub>4</sub> D-type fibers as saturable absorbers (SAs) leads to the generation of dark solitons and bright-dark soliton pairs, with average output powers reaching a maximum of 2.38 mW and 3.12 mW, respectively. To the best of our knowledge, this is the first presentation of a mode-locked fiber laser with the CrBi<sub>2</sub>Te<sub>4</sub>-based SA, and also the first study of bright and dark soliton properties of a CrBi<sub>2</sub>Te<sub>4</sub>-based fiber laser. It is foreseeable that CrBi<sub>2</sub>Te<sub>4</sub> will become an appealing candidate for bright and dark soliton fiber lasers.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105724"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471279","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

Natural statistics of multisensor images: Comparative analysis and application to image classification and image fusion

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-20 DOI: 10.1016/j.infrared.2025.105780

Mohammed Zouaoui Laidouni, Boban Bondžulić, Dimitrije Bujaković, Touati Adli, Milenko Andrić

{"title":"Natural statistics of multisensor images: Comparative analysis and application to image classification and image fusion","authors":"Mohammed Zouaoui Laidouni, Boban Bondžulić, Dimitrije Bujaković, Touati Adli, Milenko Andrić","doi":"10.1016/j.infrared.2025.105780","DOIUrl":"10.1016/j.infrared.2025.105780","url":null,"abstract":"<div><div>This paper presents a comparative analysis of multisensor images, including long-wave infrared (LWIR), near-infrared (NIR), and visible light (VIS) images, using natural scene statistics (NSS) models with a focus on image classification and optimizing multisensor image fusion. The study considers the impact of several factors, such as flat region, light condition and noise power, on four coefficients, namely, mean subtracted contrast normalized (MSCN), paired product, log-derivative, and steerable pyramid. It reveals remarkable patterns in the NSS of LWIR, NIR, and VIS images, showcasing both similarities and differences. Notably, NIR and VIS images exhibit a high statistical similarity, while LWIR displays a decorrelated pattern compared to them. Additionally, two practical tasks are addressed: image classification and multisensor image fusion. The obtained results demonstrate that the NSS of LWIR, NIR, and VIS images can firstly be used to build image distortion classifiers for multisensor images. Secondly, they can be used in multisensor image fusion to select the optimal combination of images that maximize the texture information in the fused image. These findings offer valuable insights for improving sensor selection and image fusion quality assessment.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105780"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488328","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

PIFRNet: A progressive infrared feature-refinement network for single infrared image super-resolution

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-20 DOI: 10.1016/j.infrared.2025.105779

Si Guo , Shi Yi , Mengting Chen , Yuanlu Zhang

{"title":"PIFRNet: A progressive infrared feature-refinement network for single infrared image super-resolution","authors":"Si Guo , Shi Yi , Mengting Chen , Yuanlu Zhang","doi":"10.1016/j.infrared.2025.105779","DOIUrl":"10.1016/j.infrared.2025.105779","url":null,"abstract":"<div><div>Infrared (IR) image super-resolution is essential to enrich the spatial information of low-resolution IR images for facilitating computer vision tasks in low-illumination environments. However, IR images lack the textural details and colour information. Hence, existing super-resolution methods for visible images generally yield unsatisfactory super-resolution performance for IR images. Moreover, most super-resolution methods tailored for IR images neglect their intrinsic characteristics, thereby limiting their performance. Thus, this study proposes a progressive IR feature-refinement network for single IR image super-resolution (PIFRNet). First, a sequence of cascade IR feature-refinement blocks is designed in the deep feature-extraction path to extract and refine the deep features of IR images progressively. Subsequently, hybrid CNN–Transformer modules are developed to further enhance the long-range dependency attention of the extracted features. Then, a bespoke feature-fusion strategy with down connections, skip connections, and efficient feature-fusion blocks is implemented to effectively integrate low- to high-level IR image deep features. Finally, a dedicated large-scale super-resolution dataset of IR images is constructed for training and testing the IR image super-resolution networks. Extensive ablation studies and comparative experiments are conducted on this dataset. The ablation study results verify that the components and strategies designed for the proposed network are suitable for IR image super-resolution. The comparative experimental results demonstrate the superiority of the proposed network over other state-of-the-art visible/IR image super-resolution networks. Furthermore, a robustness test and an object-detection experiment are performed to prove the adaptability of the proposed network to various types of IR images and the significant object detection accuracy improvement achieved using the proposed PIFRNet.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105779"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479885","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

Based on BP/CuInP2S6 van der Waals heterojunction terahertz photodetectors with High-performance photoresponse

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-19 DOI: 10.1016/j.infrared.2025.105774

Xin Sun , Zhen Hu , Kaixuan Zhang , Xiaokai Pan , Yingdong Wei , Shiqi Lan , Yiming Wang , Yichong Zhang , Xiaoshaung Chen , Lin Wang

{"title":"Based on BP/CuInP2S6 van der Waals heterojunction terahertz photodetectors with High-performance photoresponse","authors":"Xin Sun , Zhen Hu , Kaixuan Zhang , Xiaokai Pan , Yingdong Wei , Shiqi Lan , Yiming Wang , Yichong Zhang , Xiaoshaung Chen , Lin Wang","doi":"10.1016/j.infrared.2025.105774","DOIUrl":"10.1016/j.infrared.2025.105774","url":null,"abstract":"<div><div>The development of solid-state, integrable, and highly sensitive terahertz photodetectors plays a pivotal role in propelling the progress of terahertz technology. However, the progress of conventional semiconductor photodetectors has been hindered by factors such as material bandgap, low-temperature cooling, and optical absorption efficiency. In view of the distinctive structure and physical properties of two-dimensional (2D) materials, especially the vertical stacking without lattice mismatch and the compatibility with silicon-based optoelectronic technology, which provides a broader opportunity for nano optoelectronics. In recent years, the combination of ferroelectric localized electromagnetic field with 2D materials has opened up new avenues for designing novel optoelectronic devices, significantly augmenting detector sensitivity and expanding their wavelength response range. In this context, this paper proposes a ferroelectric field-effect transistor by integrating black phosphorus (BP) with CuInP<sub>2</sub>S<sub>6</sub> (CIPS) van der Waals heterostructures and incorporating a four-leaf clover artificial microstructure to achieve high-sensitivity detection and imaging in the terahertz range. By applying gate bias to manipulate the ferroelectric polarization of the CIPS dielectric layer, the ferroelectric field-effect transistor demonstrates an exceptional voltage responsivity (374.6 V/W), extremely low noise equivalent power (0.64 nW/Hz<sup>0.5</sup>), and a response time of 9.5 μs. The research results further expand the application range of 2D ferroelectric materials in the terahertz domain.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105774"},"PeriodicalIF":3.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463353","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

Interface trap-induced dark current in graded-layer long-wavelength infrared HgCdTe nBn photodetector

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-19 DOI: 10.1016/j.infrared.2025.105772

Yan Zhang , Tiantian Cheng , Tengfei Xu , Man Luo , Shijun Luo , Mei Ge , Jintong Xu , Chenhui Yu

{"title":"Interface trap-induced dark current in graded-layer long-wavelength infrared HgCdTe nBn photodetector","authors":"Yan Zhang , Tiantian Cheng , Tengfei Xu , Man Luo , Shijun Luo , Mei Ge , Jintong Xu , Chenhui Yu","doi":"10.1016/j.infrared.2025.105772","DOIUrl":"10.1016/j.infrared.2025.105772","url":null,"abstract":"<div><div>Long-wavelength infrared (LWIR) mercury cadmium telluride (HgCdTe) nBn photodetectors are highly promising for low dark current. Introducing Cd composition and doping concentration graded-layers effectively optimizes band alignment and carrier distribution, enhancing optoelectronic performance. However, these graded-layers generate unique interface traps that differ from bulk traps, due to intrinsic trap properties, strain relaxation and interdiffusion effects. This work specifically explores the dark current characteristics of the graded-layer LWIR HgCdTe nBn photodetector using simulation tools, achieving strong agreement with experimental results. Results confirm that interface traps are the dominant contributors to dark current, surpassing conventional Shockley-Read-Hall (SRH), Auger, and radiative recombination mechanisms. Their contribution to dark current is 1–2 orders of magnitude higher than that from bulk traps. These interface traps include acceptor-like traps located approximately 0.025 eV below the conduction band and donor-like traps around 0.25 eV above the valence band, primarily modulating interfacial charge density and electric fields through carrier capture and release processes rather than direct generation-recombination (G-R) effects. Notably, interface traps, particularly those at the absorber-barrier interface, are directly responsible for the observed negative differential resistance effect within 0.1–0.2 V reverse bias. This phenomenon is attributed to Fermi level shifts that lead to asynchronous ionization of charged traps. These effects persist with the similar order of photocurrent under infrared illumination, further highlighting their critical role. This work offers new insights into the role of interface traps in LWIR HgCdTe nBn photodetectors, offering guidance for optimizing their performance.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105772"},"PeriodicalIF":3.1,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463354","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

High sensitivity fiber ring laser torsion sensor with ultra-wide linear response and ultra-high resolution

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-18 DOI: 10.1016/j.infrared.2025.105776

Xiaokang Ma , Shuqin Lou , Jiaqi Cao , Bingsen Huang

{"title":"High sensitivity fiber ring laser torsion sensor with ultra-wide linear response and ultra-high resolution","authors":"Xiaokang Ma , Shuqin Lou , Jiaqi Cao , Bingsen Huang","doi":"10.1016/j.infrared.2025.105776","DOIUrl":"10.1016/j.infrared.2025.105776","url":null,"abstract":"<div><div>In this paper, a high sensitive fiber ring laser torsion sensor (FRLTS) with ultra-wide linear response and ultra-high resolution is designed and experimentally demonstrated. An elliptical core fiber (ECF) based Sagnac loop interferometer (SI) is utilized as a torsion sensing element as well as a filter in the FRLTS. Experimental results demonstrated that the maximum linear torsion measurement range of the torsion up to 340°, and the linear torsion sensitivities are 0.10 nm/°and −0.10 nm/° in the clockwise and counterclockwise direction, respectively. Due to the use of the fiber ring laser, the spectrum of the torsion sensor exhibits narrow linewidth and high signal-to-noise ratio, which is beneficial to enhance the resolution of the sensor. It achieves a high resolution of 0.43°, which is at least 2.3 times in comparison to that of previous reported FRLTS scheme and 47.4 times in comparison to that of interferometer-based scheme with the same type fiber. The proposed sensor possesses the advantages of wide linear response range, high resolution, high sensitivity and easy fabrication, which has great potential of applications in the field of aviation, medical, health monitoring.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105776"},"PeriodicalIF":3.1,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143463352","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

Infrared small target detection based on isolated hyperedge

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-02-17 DOI: 10.1016/j.infrared.2025.105752

Xiao-ling Ge, Wei-xian Qian

{"title":"Infrared small target detection based on isolated hyperedge","authors":"Xiao-ling Ge, Wei-xian Qian","doi":"10.1016/j.infrared.2025.105752","DOIUrl":"10.1016/j.infrared.2025.105752","url":null,"abstract":"<div><div>Detecting infrared small targets robustly in complex backgrounds is crucial for Infrared Search and Track (IRST) applications. However, high-intensity structures in the background, such as sharp edges, pose a challenging task, especially when the target has a low signal-to-noise ratio. We propose an Intuitionistic Fuzzy Hypergraph-based Target Detection method (IFHTD) to address this issue. IFHTD models the uncertainty of small target detection by intuitively fuzzifying the entire image at the pixel level. We define weighted intuitionistic fuzzy entropy as a membership function for target attributes in image blocks, thereby obtaining intuitionistic fuzzy sets for each image block vertex. Subsequently, the detection of infrared small targets is transformed into detecting regionally isolated hyperedges. Using intuitionistic fuzzy divergence distance metrics, we construct an intuitionistic fuzzy hypergraph for an image window. Isolated hyperedges are extracted from the centers of the image window using a predefined threshold. These isolated hyperedges are assigned weights to create a weighted graph, doubling as the infrared target’s saliency map. Experimental results demonstrate our algorithm’s robustness and effectiveness in practical infrared small target detection scenarios.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"146 ","pages":"Article 105752"},"PeriodicalIF":3.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436803","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