International Conference on Optical Instruments and Technology最新文献_第9页

Terahertz focusing enhancement for graphene-based tunable metalens 基于石墨烯的可调谐超构透镜的太赫兹聚焦增强

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2618749

Jianzhou Huang, B. Hu, Guo-cui Wang, Weiguang Liu, Zongyuan Wang, Yan Zhang, Juan Liu

引用次数: 0

A convolutional neural network based complex scene classification framework using transfer deep combined convolutional activations 基于卷积神经网络的复杂场景分类框架

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2618661

Shuyun Liu, Hong Wang, Yutong Jiang, Zhonglin Yang, Zhiyang Ma

引用次数: 0

Design and analysis of an optical zoom system-based on super-elastic film liquid lens 基于超弹性薄膜液体透镜的光学变焦系统设计与分析

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2616337

Zhaoyang Liu, Huajie Hong, Zihao Gan, Yangyang Hou, Zhe Zeng

{"title":"Design and analysis of an optical zoom system-based on super-elastic film liquid lens","authors":"Zhaoyang Liu, Huajie Hong, Zihao Gan, Yangyang Hou, Zhe Zeng","doi":"10.1117/12.2616337","DOIUrl":"https://doi.org/10.1117/12.2616337","url":null,"abstract":"As a new type of zoom element, the liquid lens has the characteristics of fast response, no wear, and small size, which brings new ideas to the design of the zoom system. This paper proposes a liquid-solid composite zoom optical system without mechanical movement. In the system, two liquid lenses are used as the zoom group and the compensation group of the system, so that the image plane position is always stable during the zooming process of the system. Based on the Gaussian theory, the relationship between the focal length of the system and the focal length of a single liquid lens is derived, and a multi-layer traversal algorithm is proposed to solve the initial structure parameters of the system. The optimized design of the zoom optical system and image quality analysis was completed by using ZEMAX software. The results show that the system can achieve continuous zoom in the range of 20-60mm, the zoom ratio of the system is 3, and the image quality is good. The modulation transfer function of each focal length of the zoom system at a spatial frequency of 50lp/mm is greater than 0.2, and the RMS value of wave aberration is greater than 0.3 times the wavelength of the probe light, which meets the design requirements.","PeriodicalId":201899,"journal":{"name":"International Conference on Optical Instruments and Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117128986","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}

引用次数: 0

A method of improving registration accuracy of infrared and visible images 一种提高红外和可见光图像配准精度的方法

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2616454

Bingyi Xiong, Junsheng Shi, Huaqiang Wang, Jing Liang, Ruimin Huang

{"title":"A method of improving registration accuracy of infrared and visible images","authors":"Bingyi Xiong, Junsheng Shi, Huaqiang Wang, Jing Liang, Ruimin Huang","doi":"10.1117/12.2616454","DOIUrl":"https://doi.org/10.1117/12.2616454","url":null,"abstract":"Fusion of infrared (IR) and visible sensor images is the widely applied. The registration is the basis for sensor fusion and fusion methods are very sensitive to the level of registration accuracy. However, the different imaging systems of the both lead to quite different image characteristics in a same scene and significant misalignment due to differences in field of view, lens distortion and other camera characteristics. So that, the registering accurately the both of sensor images is very challenging. A method to improve the accuracy of image registration is proposed in this paper. The method is based a self-designed long-wave IR/visible dual-band imaging system for capturing simultaneously both of images, which is not only with synchronous focusing and optical registration as much as possible, but also with a sliding potentiometer that record the voltage corresponding to the focusing distance. At first, an affine transformation of the registration at several different distances is acquired with two calibration board images captured self-designed calibration board by the dual-band imaging system. Then, the affine transformation matrices corresponding to the several finite distance are interpolated to obtain more affine transformation matrices within a certain distance, and an accurate look-up table is established. Last, when the dual-band imaging system is working, the current focal length is read out according to the sliding potentiometer in the system, and then the corresponding affine transformation matrix is searched for image registration. The proposed method is evaluated by comparing the deviation of the corresponding feature point coordinates on both of calibration board images before and after registration. Experimental results show that the proposed method can improve the registration accuracy of IR and visible images at different distances.","PeriodicalId":201899,"journal":{"name":"International Conference on Optical Instruments and Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130730275","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}

引用次数: 0

Design of a new pixel LED automobile headlamp 一种新型像素LED汽车前照灯的设计

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2611963

Lei Liu, Lin Li

{"title":"Design of a new pixel LED automobile headlamp","authors":"Lei Liu, Lin Li","doi":"10.1117/12.2611963","DOIUrl":"https://doi.org/10.1117/12.2611963","url":null,"abstract":"Because LED has the advantages of energy saving, environmental protection, long service life and fast response time for traditional light sources, LED is gradually replacing the position of traditional light sources in the field of lighting, and LED is more and more widely used in automobile headlights. However, there are some safety problems during vehicle driving. For example, the glare of strong high beam lights on oncoming vehicles and passers-by at night has become the main cause of many traffic accidents. The emergence of ADB (adaptive driving beam) has reduced the occurrence of such traffic accidents to a certain extent, However, compared with pixel car headlights, it still has some limitations. For example, its controllable precision is not high enough, and its ability to deal with some more complex environments is not enough. At the same time, due to its projection ability, pixel headlights can not only remind drivers of driving safety, but also help other traffic participants, and their safety has been greatly improved. This paper introduces a new type of intelligent automobile headlamp based on pixel led. In this automobile headlamp, five LEDs with 1024 pixels are used, which are divided into imaging area and lighting area. The light distribution lens matching each area is designed. At the same time, the brightness and brightness of each pixel LED are controlled through circuit design, so as to realize the projection imaging of traffic signs and the light type transformation of high beam anti glare and low beam. Pixel LED car headlights have more accurate control accuracy and higher safety than general adaptive car headlights.","PeriodicalId":201899,"journal":{"name":"International Conference on Optical Instruments and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126593357","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}

引用次数: 0

Terahertz modulation devices based on patterned laser-induced graphene 基于图形激光诱导石墨烯的太赫兹调制器件

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2620041

Zongyuan Wang, B. Hu

引用次数: 0

Optical coherence tomography microvascular imaging method based on svOCT and cmOCT 基于svOCT和cmOCT的光学相干层析微血管成像方法

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2611625

Juan Wang, Liquan Dong, Lingqin Kong, Ming Liu, Mei Hui, Yuejin Zhao

{"title":"Optical coherence tomography microvascular imaging method based on svOCT and cmOCT","authors":"Juan Wang, Liquan Dong, Lingqin Kong, Ming Liu, Mei Hui, Yuejin Zhao","doi":"10.1117/12.2611625","DOIUrl":"https://doi.org/10.1117/12.2611625","url":null,"abstract":"OCT is a new imaging technology based on the principle of Michelson interferometer to perform tomography of sample tissue. OCT has the characteristics of high-resolution, non-invasive, real-time detection, and non-destructive imaging. The OCT vascular imaging method can generate high-contrast microvascular images without injecting a contrast agent. This paper presents a new microvascular imaging method (sv-cmOCT) that combines two existing microvascular imaging methods - speckle variance optical coherence tomography (svOCT) and correlation mapping optical coherence tomography (cmOCT). The binarised image of svOCT is used to mask the cmOCT image, which can effectively suppress background noise and static artefacts, and ultimately generate a microvascular image with high contrast. In this paper, blood flow mimic experiments and animal experiments were designed to validate the imaging performance of the microvascular imaging method. It is demonstrated that the proposed method can improve the signal-to-noise ratio of microvascular images well compared to methods such as svOCT and cmOCT and B-scan mask cmOCT. The study of microvascular imaging methods will greatly help to improve the understanding of the pathology of some diseases and thus may improve the clinical interpretation of human diseases!","PeriodicalId":201899,"journal":{"name":"International Conference on Optical Instruments and Technology","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123462447","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}

引用次数: 0

Research on PTZ tracking control system based on kinematics feedforward algorithm 基于运动学前馈算法的PTZ跟踪控制系统研究

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2610750

Zeyuan Ji, Qingliang Jiao, Ming Liu

引用次数: 0

Research status of collaborative detection of battlefield situation and its development trend in intelligent battlefield 智能战场中战场态势协同检测的研究现状及发展趋势

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2620696

Jia Zhang, Bing-min Hu, Ying Lu, Hu Huang, Zongyuan Wang, Yue Gu, Benchang Zheng, Jinlei Ren, Jun Li

{"title":"Research status of collaborative detection of battlefield situation and its development trend in intelligent battlefield","authors":"Jia Zhang, Bing-min Hu, Ying Lu, Hu Huang, Zongyuan Wang, Yue Gu, Benchang Zheng, Jinlei Ren, Jun Li","doi":"10.1117/12.2620696","DOIUrl":"https://doi.org/10.1117/12.2620696","url":null,"abstract":"Battlefield situational awareness is the core condition that determines the success or failure of the battlefield, and it is also an important application direction of photodetectors. The rapid development of AI technology in recent years is about to cause major changes in future wars. The new AI battlefield will also put forward new urgent needs for situational awareness. This article summarizes the current main modes of collaborative detection of battlefield situation awareness and its research status, including radar / infrared composite detection, multi-source data fusion of radar / infrared detection, cooperative target recognition, target tracking, etc. On this basis, combined with the current development trend of the intelligence level of the main battlefield equipment, we get the development needs of future intelligent battlefield situational awareness for new types of collaborative detection, including requirements for its style, angle, speed, and detection targets of distributed collaborative detection. Based on this, the key development directions and core issues to be solved for intelligent battlefield situational awareness in the future are proposed.","PeriodicalId":201899,"journal":{"name":"International Conference on Optical Instruments and Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117329056","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}

引用次数: 0

Terahertz optical logic calculation based on diffraction neural network 基于衍射神经网络的太赫兹光学逻辑计算

International Conference on Optical Instruments and Technology Pub Date : 2022-07-22 DOI: 10.1117/12.2619618

Chenjie Xiong, B. Hu

引用次数: 0