Chaoyi Zhang, Silu Peng, Jiayue Han, Chunyu Li, Hongxi Zhou, Yadong Jiang, Jun Wang
Due to the increasing demand for miniaturization and portability, the development of self-powered photodetectors that can work without external power supply has aroused great interest among researchers. As a group-10 layered transitional metal dichalcogenides, PtSe2 exhibits potential applications in photoelectric detection because of the unique properties such as high carrier mobility, tunable bandgap, and stability. However, its inherent large dark current hinders the further improvement of the performance of the PtSe2 photodetectors. In this paper, we fabricated a vertically aligned Two-dimensional (2D) van der Waals (vdWs) heterojunction composed of PtSe2 and MoSe2, which exhibits high sensitivity photoelectric detection performance in a wide band from visible light (405 nm) to near-infrared (1550 nm) without external bias. As a result, working in self-driving mode at room temperature, the responsivity and detectivity can reach 22.95 A W-1 and 9.27×1011 Jones with a fast response speed of 180/48 μs. This work is expected to provide a new idea for broadband, energy-efficient and high-performance miniaturized detectors.
{"title":"Self-powered photodetector with high performance based on PtSe2/MoSe2 van der Waals heterojunction","authors":"Chaoyi Zhang, Silu Peng, Jiayue Han, Chunyu Li, Hongxi Zhou, Yadong Jiang, Jun Wang","doi":"10.1117/12.3007206","DOIUrl":"https://doi.org/10.1117/12.3007206","url":null,"abstract":"Due to the increasing demand for miniaturization and portability, the development of self-powered photodetectors that can work without external power supply has aroused great interest among researchers. As a group-10 layered transitional metal dichalcogenides, PtSe2 exhibits potential applications in photoelectric detection because of the unique properties such as high carrier mobility, tunable bandgap, and stability. However, its inherent large dark current hinders the further improvement of the performance of the PtSe2 photodetectors. In this paper, we fabricated a vertically aligned Two-dimensional (2D) van der Waals (vdWs) heterojunction composed of PtSe2 and MoSe2, which exhibits high sensitivity photoelectric detection performance in a wide band from visible light (405 nm) to near-infrared (1550 nm) without external bias. As a result, working in self-driving mode at room temperature, the responsivity and detectivity can reach 22.95 A W-1 and 9.27×1011 Jones with a fast response speed of 180/48 μs. This work is expected to provide a new idea for broadband, energy-efficient and high-performance miniaturized detectors.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"24 4","pages":"129630P - 129630P-11"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aerial infrared target tracking is one of the core technologies of the infrared imaging missile electro-optical countermeasures system and has important application value. However, in practical applications, the traditional kernel correlation filter (KCF) algorithm suffers from problems such as single scale and poor resistance to occlusion, resulting in poor tracking when the target changes scale or is in a complex background. In order to solve these problems, this paper proposes a way to improve the KCF algorithm. SIFT feature points are combined with correlation filtering methods to build a more flexible and adaptive feature representation, and a scale adaptivity mechanism is introduced to improve tracking performance. The paper is also validated by experiments based on infrared video datasets, and the results show that the improved KCF algorithm has better robustness and tracking performance in aerial infrared target tracking compared to the traditional KCF algorithm.
{"title":"Aerial infrared target tracking algorithm based on kernel correlation filtering and SIFT features in complex background","authors":"Chunxu Li, Bo Lou, Shiwei Guo","doi":"10.1117/12.3007640","DOIUrl":"https://doi.org/10.1117/12.3007640","url":null,"abstract":"Aerial infrared target tracking is one of the core technologies of the infrared imaging missile electro-optical countermeasures system and has important application value. However, in practical applications, the traditional kernel correlation filter (KCF) algorithm suffers from problems such as single scale and poor resistance to occlusion, resulting in poor tracking when the target changes scale or is in a complex background. In order to solve these problems, this paper proposes a way to improve the KCF algorithm. SIFT feature points are combined with correlation filtering methods to build a more flexible and adaptive feature representation, and a scale adaptivity mechanism is introduced to improve tracking performance. The paper is also validated by experiments based on infrared video datasets, and the results show that the improved KCF algorithm has better robustness and tracking performance in aerial infrared target tracking compared to the traditional KCF algorithm.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"442 ","pages":"129600H - 129600H-5"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kai Zhao, Ruitao Lu, Siyu Wang, Xiaogang Yang, Fangjia Lian
To address the problems of complex background of land buildings and islands in near-shore SAR image ship detection, dense ship docking, and thus inaccurate localization and target miss detection, we propose a YOLOv7 near-shore SAR ship rotation target detection model based on the attention mechanism and KLD improvement. Firstly, considering the lack of attention mechanism and remote dependency of YOLOv7, CA attention mechanism is added to the backbone network to improve the model context encoding capability and enhance the model accuracy. Secondly, the 3D nonreference attention mechanism SimAm is introduced to further improve the attention to ship features. Finally, the angular information is considered for the problem that the ship targets of SAR images are closely aligned in any direction. KLD is used as the localization loss function. The experimental results on the SSDD dataset show that the improved algorithm in this paper improves AP by 14.34% in near-shore scenes and the same in offshore scenes, with 2.22% improvement in all scenes relative to the original YOLOv7 model. The experimental results show that the algorithm applies to detecting ship targets in any direction in the near-shore scenes.
针对近岸 SAR 图像船舶检测中陆地建筑物和岛屿背景复杂、船舶停靠密集，从而导致定位不准和目标漏检等问题，提出了基于关注机制和 KLD 改进的 YOLOv7 近岸 SAR 船舶旋转目标检测模型。首先，考虑到 YOLOv7 缺乏注意机制和远程依赖性，在骨干网络中加入 CA 注意机制，提高模型上下文编码能力，增强模型精度。其次，引入三维非参考关注机制 SimAm，进一步提高对舰船特征的关注。最后，针对合成孔径雷达图像中的船舶目标在任何方向上都紧密排列的问题，考虑了角度信息。使用 KLD 作为定位损失函数。在 SSDD 数据集上的实验结果表明，本文的改进算法在近岸场景中将 AP 提高了 14.34%，在离岸场景中也是如此，与原始 YOLOv7 模型相比，在所有场景中均提高了 2.22%。实验结果表明，该算法适用于近岸场景中任何方向的船舶目标检测。
{"title":"Rotating target detection for nearshore SAR ships based on improved YOLOv7","authors":"Kai Zhao, Ruitao Lu, Siyu Wang, Xiaogang Yang, Fangjia Lian","doi":"10.1117/12.2692585","DOIUrl":"https://doi.org/10.1117/12.2692585","url":null,"abstract":"To address the problems of complex background of land buildings and islands in near-shore SAR image ship detection, dense ship docking, and thus inaccurate localization and target miss detection, we propose a YOLOv7 near-shore SAR ship rotation target detection model based on the attention mechanism and KLD improvement. Firstly, considering the lack of attention mechanism and remote dependency of YOLOv7, CA attention mechanism is added to the backbone network to improve the model context encoding capability and enhance the model accuracy. Secondly, the 3D nonreference attention mechanism SimAm is introduced to further improve the attention to ship features. Finally, the angular information is considered for the problem that the ship targets of SAR images are closely aligned in any direction. KLD is used as the localization loss function. The experimental results on the SSDD dataset show that the improved algorithm in this paper improves AP by 14.34% in near-shore scenes and the same in offshore scenes, with 2.22% improvement in all scenes relative to the original YOLOv7 model. The experimental results show that the algorithm applies to detecting ship targets in any direction in the near-shore scenes.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"22 ","pages":"1296002 - 1296002-10"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We proposed a compact and efficient TE-pass polarizer in silicon-on-insulator(SOI) platform, which consist of polarization beam splitters (PBS), polarization rotators (PR) and polarization splitter-rotators (PSR) . The transmission of transverse magnetic(TM) and transverse electric(TE) modes can reach 88.9% and 98.6% at the wavelength of 1550 nm, and the loss is less than 1.6 dB. The PR shows a high polarization conversion efficiency (PCE) of 98.2% within a total device length of about 7.2 um. The device is much smaller than the general level of polarization devices, which can fulfill the polarization control in the integrated optical gyroscope (IOG).
{"title":"TE-pass polarizers based on mode rotation and coupling in SOI platform","authors":"Siyan Chen, Ningfang Song, Zhiyu Guo, Zuchen Zhang","doi":"10.1117/12.3006439","DOIUrl":"https://doi.org/10.1117/12.3006439","url":null,"abstract":"We proposed a compact and efficient TE-pass polarizer in silicon-on-insulator(SOI) platform, which consist of polarization beam splitters (PBS), polarization rotators (PR) and polarization splitter-rotators (PSR) . The transmission of transverse magnetic(TM) and transverse electric(TE) modes can reach 88.9% and 98.6% at the wavelength of 1550 nm, and the loss is less than 1.6 dB. The PR shows a high polarization conversion efficiency (PCE) of 98.2% within a total device length of about 7.2 um. The device is much smaller than the general level of polarization devices, which can fulfill the polarization control in the integrated optical gyroscope (IOG).","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"11 1","pages":"1296615 - 1296615-7"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study establishes a laser propulsion system with a pulsed laser at the tip of a tapered optical fiber, and investigates the interaction between polystyrene (PS) microspheres and nanosecond laser pulses in water. The system can effectively control the generation of laser energy and spot, achieving precise microsphere propulsion. Additionally, we employ a laser propulsion system with a conical fiber structure to separate and remove PS microsphere clusters in water. This type of laser propulsion system is characterized by simple operation and precise positioning, and based on these features, the study of PS microsphere propulsion using the conical fiber laser propulsion system holds potential applications in underwater laser cleaning and underwater microstructure manipulation.
{"title":"Study on nanosecond pulse laser propulsion microspheres based on a tapered optical fiber in water environment","authors":"Gaoqian Zhou, Hanyang Li, Xulong Yang, Yang Ge","doi":"10.1117/12.3005074","DOIUrl":"https://doi.org/10.1117/12.3005074","url":null,"abstract":"This study establishes a laser propulsion system with a pulsed laser at the tip of a tapered optical fiber, and investigates the interaction between polystyrene (PS) microspheres and nanosecond laser pulses in water. The system can effectively control the generation of laser energy and spot, achieving precise microsphere propulsion. Additionally, we employ a laser propulsion system with a conical fiber structure to separate and remove PS microsphere clusters in water. This type of laser propulsion system is characterized by simple operation and precise positioning, and based on these features, the study of PS microsphere propulsion using the conical fiber laser propulsion system holds potential applications in underwater laser cleaning and underwater microstructure manipulation.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"9 3","pages":"129590H - 129590H-5"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An algorithm is designed to realize the digital representation of long distance transmission laser spot energy intensity distribution, due to the current situation that the energy intensity of long distance transmission laser spots cannot be accurately represented in the laser system. A definite number is obtained by image processing and program calculation of a laser spot. The simulated laser spots are calculated and contrasted to verify the universality and applicability of the algorithm. The calculation results show that the spots size have negative impact on the representation results. Using this algorithm, the adjustment criterion of the long distance transmission laser spots in the laser system can be set more conveniently.
{"title":"A digital representation algorithm for long distance transmission laser spot energy intensity distribution","authors":"Ning Su, Xiaoke Dai, Liang Sun","doi":"10.1117/12.3007946","DOIUrl":"https://doi.org/10.1117/12.3007946","url":null,"abstract":"An algorithm is designed to realize the digital representation of long distance transmission laser spot energy intensity distribution, due to the current situation that the energy intensity of long distance transmission laser spots cannot be accurately represented in the laser system. A definite number is obtained by image processing and program calculation of a laser spot. The simulated laser spots are calculated and contrasted to verify the universality and applicability of the algorithm. The calculation results show that the spots size have negative impact on the representation results. Using this algorithm, the adjustment criterion of the long distance transmission laser spots in the laser system can be set more conveniently.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"75 1","pages":"1295915 - 1295915-6"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Computational optical microscopy can obtain multidimensional and microscopic sample images and information that cannot be observed by the naked eye. However, due to limitations in hardware manufacturing level, optical deployment methods, and detection tools, there are often errors between the actual imaging system and its physical model, which makes it difficult for computational optical microscopy to achieve stable imaging functions and obtain high-quality observation images. This paper introduces an automatic correction method for microscope stage based on Hough Transform image processing. It does not require manual operation and only requires image processing of the imaging results to complete the correction fully automatically. The correction process is simple and fast, with better visualization and accuracy for the imaging results. It can greatly improve the efficiency of stage correction and ensure that the computational optical microscopy system can obtain high-quality observation images, and it can be universally applicable to optical microscopy systems with electrically controlled displacement stage.
{"title":"Automatic correction method of optical microscope displacement stage based on Hough transform","authors":"Yu Zhang, Yao Fan, Chao Zuo","doi":"10.1117/12.3007590","DOIUrl":"https://doi.org/10.1117/12.3007590","url":null,"abstract":"Computational optical microscopy can obtain multidimensional and microscopic sample images and information that cannot be observed by the naked eye. However, due to limitations in hardware manufacturing level, optical deployment methods, and detection tools, there are often errors between the actual imaging system and its physical model, which makes it difficult for computational optical microscopy to achieve stable imaging functions and obtain high-quality observation images. This paper introduces an automatic correction method for microscope stage based on Hough Transform image processing. It does not require manual operation and only requires image processing of the imaging results to complete the correction fully automatically. The correction process is simple and fast, with better visualization and accuracy for the imaging results. It can greatly improve the efficiency of stage correction and ensure that the computational optical microscopy system can obtain high-quality observation images, and it can be universally applicable to optical microscopy systems with electrically controlled displacement stage.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"13 7","pages":"129630X - 129630X-8"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zinc oxide (ZnO), a semiconductor material, has been widely explored due to its unique photoelectric properties. However, its application in photoelectric chemistry is limited by its fast recombination of excited electron-hole pairs and narrow wavelength range of light absorption. Here, we report a novel Ag-nanoparticle-decorated ZnO/ZnSe core-shell heterostructure, which greatly enhances the photoelectrochemical properties compared with pure ZnO. The nanocomposites, consisting of ZnO nanorods as the core and Ag-nanoparticle-decorated zinc selenide (ZnSe) as the shell, were synthesized via an improved low-temperature hydrothermal method combined with in-situ selenization-chemical vapor deposition and nanoparticle self-assembly techniques. The material presents a much higher photocurrent density than pure ZnO material with sub-millisecond response time and excellent stability. Our synthetic strategy may open up a new way to enhance photoelectrochemical performance of core-shell heterojunctions, which could find plausible applications in photodetectors and optoelectronic devices.
氧化锌（ZnO）是一种半导体材料，因其独特的光电特性而被广泛研究。然而，由于其激发电子-空穴对的快速重组以及光吸收波长范围较窄，其在光电化学中的应用受到了限制。在此，我们报告了一种新型 Ag 纳米粒子装饰的 ZnO/ZnSe 核壳异质结构，与纯 ZnO 相比，它大大提高了光电化学特性。这种纳米复合材料以 ZnO 纳米棒为核，以 Ag 纳米粒子装饰的硒化锌（ZnSe）为壳，是通过改进的低温水热法结合原位硒化-化学气相沉积和纳米粒子自组装技术合成的。该材料的光电流密度远高于纯 ZnO 材料，响应时间为亚毫秒级，且稳定性极佳。我们的合成策略可能会为提高核壳异质结的光电化学性能开辟一条新途径，从而在光电探测器和光电器件中找到合理的应用。
{"title":"Ag-nanoparticle-decorated ZnO/ZnSe core-shell heterostructure and its enhanced photoelectrochemical performance","authors":"Hui Wu, Jialong Peng, Zhihong Zhu","doi":"10.1117/12.2692780","DOIUrl":"https://doi.org/10.1117/12.2692780","url":null,"abstract":"Zinc oxide (ZnO), a semiconductor material, has been widely explored due to its unique photoelectric properties. However, its application in photoelectric chemistry is limited by its fast recombination of excited electron-hole pairs and narrow wavelength range of light absorption. Here, we report a novel Ag-nanoparticle-decorated ZnO/ZnSe core-shell heterostructure, which greatly enhances the photoelectrochemical properties compared with pure ZnO. The nanocomposites, consisting of ZnO nanorods as the core and Ag-nanoparticle-decorated zinc selenide (ZnSe) as the shell, were synthesized via an improved low-temperature hydrothermal method combined with in-situ selenization-chemical vapor deposition and nanoparticle self-assembly techniques. The material presents a much higher photocurrent density than pure ZnO material with sub-millisecond response time and excellent stability. Our synthetic strategy may open up a new way to enhance photoelectrochemical performance of core-shell heterojunctions, which could find plausible applications in photodetectors and optoelectronic devices.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"245 ","pages":"1296102 - 1296102-7"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhenyao Li, Yu Zhu, Shengxing Song, Zhanqiang Ru, Zhizheng Yin, Nan Liu, Peng Ding, Fei Wu, Helun Song
This article describes data processing for background removal, peak matching in spectrum analyses for experiments such as high-throughput experiments, which is subtracting background function from original data. We tested algorithms such as polynomial method, Whittaker-smoothing-based method, spline and morphological method, and make comparison among these common-used background removal algorithm. Using variable control for main parameters in each algorithm, and Euclidean norm for measuring the distance between original data and baseline function. We get the conclusion that morphological takes advantage in that its baseline function is nearest to original data. By analyzing theory, factor choosing and effectiveness, it is clear that regional graphic procedure and segment procedure are more effective. So further experience aim is determined.
{"title":"Research on accuracy and optimization for some baseline removal algorithms for high-throughput experiments","authors":"Zhenyao Li, Yu Zhu, Shengxing Song, Zhanqiang Ru, Zhizheng Yin, Nan Liu, Peng Ding, Fei Wu, Helun Song","doi":"10.1117/12.3004264","DOIUrl":"https://doi.org/10.1117/12.3004264","url":null,"abstract":"This article describes data processing for background removal, peak matching in spectrum analyses for experiments such as high-throughput experiments, which is subtracting background function from original data. We tested algorithms such as polynomial method, Whittaker-smoothing-based method, spline and morphological method, and make comparison among these common-used background removal algorithm. Using variable control for main parameters in each algorithm, and Euclidean norm for measuring the distance between original data and baseline function. We get the conclusion that morphological takes advantage in that its baseline function is nearest to original data. By analyzing theory, factor choosing and effectiveness, it is clear that regional graphic procedure and segment procedure are more effective. So further experience aim is determined.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"215 ","pages":"1296204 - 1296204-7"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the process of scene based non-uniformity correction, the scene is often changeable, and the corresponding detector operating range of different temperature scenes is different, and their nonuniformity parameters are also different, so when the scene changes, the non-uniformity parameters will also drift, and it is easy to introduce serious ghosts in the correction results, which greatly reduces the Rate of convergence of the algorithm, This poses serious problems for real-time non-uniformity correction algorithms. At the same time, the scene is very flexible, and a single model cannot describe the scene well. Therefore, on the basis of treating the dynamic change process of the scene as a Markov process, this article proposes an adaptive non-uniformity correction algorithm based on Multi Model Particle Filter (PF-NUC). By introducing a tracking framework of particle filter, a nonlinear and non Gaussian parameter estimation model is established. Through experimental simulation verification, after the algorithm proposed in this article, almost no ghosts or residual non-uniformity can be seen. Through visual evaluation, the PF-NUC method has the best ability to remove fixed pattern noise.
{"title":"Adaptive non-uniformity correction based on multi model particle filter","authors":"Honglie Xu, Chunhua Yang, Qilian Cui","doi":"10.1117/12.3007582","DOIUrl":"https://doi.org/10.1117/12.3007582","url":null,"abstract":"In the process of scene based non-uniformity correction, the scene is often changeable, and the corresponding detector operating range of different temperature scenes is different, and their nonuniformity parameters are also different, so when the scene changes, the non-uniformity parameters will also drift, and it is easy to introduce serious ghosts in the correction results, which greatly reduces the Rate of convergence of the algorithm, This poses serious problems for real-time non-uniformity correction algorithms. At the same time, the scene is very flexible, and a single model cannot describe the scene well. Therefore, on the basis of treating the dynamic change process of the scene as a Markov process, this article proposes an adaptive non-uniformity correction algorithm based on Multi Model Particle Filter (PF-NUC). By introducing a tracking framework of particle filter, a nonlinear and non Gaussian parameter estimation model is established. Through experimental simulation verification, after the algorithm proposed in this article, almost no ghosts or residual non-uniformity can be seen. Through visual evaluation, the PF-NUC method has the best ability to remove fixed pattern noise.","PeriodicalId":502341,"journal":{"name":"Applied Optics and Photonics China","volume":"39 ","pages":"129630W - 129630W-7"},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139174158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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