光电工程最新文献_第2页

Siamese network visual tracking algorithm based on online learning 基于在线学习的Siamese网络视觉跟踪算法

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-04-15 DOI: 10.12086/OEE.2021.200140

Chengyue Zhang, Zhiqiang Hou, Pu Lei, Chen Lilin, Sugang Ma, Wangsheng Yu

{"title":"Siamese network visual tracking algorithm based on online learning","authors":"Chengyue Zhang, Zhiqiang Hou, Pu Lei, Chen Lilin, Sugang Ma, Wangsheng Yu","doi":"10.12086/OEE.2021.200140","DOIUrl":"https://doi.org/10.12086/OEE.2021.200140","url":null,"abstract":"Visual tracking algorithm based on a Siamese network is an important method in the field of visual tracking in recent years, and it has good performance in tracking speed and accuracy. However, most tracking algorithms based on the Siamese network rely on an off-line training model and lack of online update to tracker. In order to solve this problem, we propose an online learning-based visual tracking algorithm for Siamese networks. The algorithm adopts the idea of double template, treats the target in the first frame as a static template, and uses the high confidence update strategy to obtain the dynamic template in the subsequent frame; in online tracking, the fast transform learning model is used to learn the apparent changes of the target from the double template, and the target likelihood probability map of the search area is calculated according to the color histogram characteristics of the current frame, and the background suppression learning is carried out. Finally, the response map obtained by the dual templates is weighted, and the final prediction result is obtained. The experimental results on OTB2015, TempleColor128, and VOT datasets show that the test results of this algorithm are improved compared with the mainstream algorithms in recent years and have better tracking performance in target deformation, similar background interference, fast motion, and other scenarios.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85719047","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

Preparation method for polyimide films with imaging potential 具有成像电位的聚酰亚胺薄膜的制备方法

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-04-15 DOI: 10.12086/OEE.2021.200381

Lv Gang, Yang Wei, Mao Danbo, Wu Shibin, Ren Ge

引用次数: 0

Mode field diameter measurement of single mode fiber using Bessel function fitting method based on variable aperture in far field 基于远场变孔径贝塞尔函数拟合方法的单模光纤模场直径测量

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-04-15 DOI: 10.12086/OEE.2021.200308

H. Yue, Xiang Huazhong, Zhao Renyan, Tu Jiankun, Zheng Gang

引用次数: 1

Fusing point cloud with image for object detection using convolutional neural networks 基于卷积神经网络的点云和图像融合目标检测

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-04-15 DOI: 10.12086/OEE.2021.200325

Zhang Jiesong, Huang Yingping, Zhang Rui

引用次数: 0

Stereoscopic zoom for visual optimization based on grid deformation 基于网格变形的立体变焦视觉优化

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-04-15 DOI: 10.12086/OEE.2021.200186

Zhou Shen, Chai Xiongli, Shao Feng

{"title":"Stereoscopic zoom for visual optimization based on grid deformation","authors":"Zhou Shen, Chai Xiongli, Shao Feng","doi":"10.12086/OEE.2021.200186","DOIUrl":"https://doi.org/10.12086/OEE.2021.200186","url":null,"abstract":"Stereoscopic image zoom optimization is a popular basic research problem in the field of image processing and computer vision in recent years. The zoom visual enhancement technology of 3D images has attracted more and more attention. To this end, this paper proposes a method of stereoscopic zoom vision optimization based on grid deformation from the model of camera zoom shooting, and strives to improve the experience of 3D stereo-scopic vision. Firstly, use the digital zoom method to simulate the camera model to properly zoom in on the target area, and then establish the mapping relationship between the reference image and the target image according to the camera zoom distance. Secondly, extract the foreground target object and use the modified just noticeable depth difference (JNDiD) model to guide the adaptive depth adjustment of the target object. Finally, combined with the seven grid-optimized energy terms designed in this paper, the image grid is optimized to improve the visual perception of the target object and ensure a good visual experience for the entire stereoscopic image. Compared with the existing digital zoom method, the proposed method has better effects on the size control of the image target object and the depth adjustment of the target object.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85909004","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: 1

Micro/Nano profile measurement by structured illumination microscopy utilizing time-domain phase-shift technique 利用时域相移技术的结构照明显微微/纳米轮廓测量

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-04-15 DOI: 10.12086/OEE.2021.200430

Fan Songru, Fan-chao Meng, Chen Donghui, Zhao Qing

引用次数: 2

Research on the calculation method of the ultra-precision turning trajectory of large-vector high-convex cylinders 大矢量高凸圆柱超精密车削轨迹计算方法研究

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-03-22 DOI: 10.12086/OEE.2021.200192

Lei Rongliang, Li Yun, Lin Wumei, Z. Shuai, Qing Jianhong, Tang Linfeng

引用次数: 0

Embedded gold-plated fiber Bragg grating temperature and stress sensors encapsulated in capillary copper tube 嵌入式镀金光纤光栅温度和应力传感器封装在毛细管铜管

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-03-22 DOI: 10.12086/OEE.2021.200195

Z. Yanjun, Gao Haichuan, Zhang Longtu, Liu Qiang, Fu Xinghu

{"title":"Embedded gold-plated fiber Bragg grating temperature and stress sensors encapsulated in capillary copper tube","authors":"Z. Yanjun, Gao Haichuan, Zhang Longtu, Liu Qiang, Fu Xinghu","doi":"10.12086/OEE.2021.200195","DOIUrl":"https://doi.org/10.12086/OEE.2021.200195","url":null,"abstract":"In order to realize the non-destructive and real-time dynamic stress monitoring method of the construction machinery surface in complex and harsh environments, a fiber Bragg grating (FBG) stress sensor packaging method based on magnetron sputtering technology is proposed. Two packaging methods of complete embedding (the capillary copper tube embedded in the entire grating area) and two sides embedding (capillary copper tube nested at both ends of the grating area) are studied. The sensitization effect of the sensor is analyzed from the perspective of theory and finite element, and the results are consistent. The physical sensors are made, and temperature, stress, and comparison experiments are carried out. Simulation and experiment show that the FBG sensor improves the sensitivity by about 7.5% under this model. The temperature experiment shows that the temperature feedback correlation coefficient R2 of the second package structure reaches 0.99948, which shows good linearity in the range of 30 ℃80 ℃; the stress experiment correlation coefficient R2 also reaches 0.99924, and the sensitivity is 6.14 pm/MPa. The accuracy of demodulation system reaches 0.05 MPa, it can demodulate stress quickly and accurately. Comparative experiments show that the monitoring system composed of grating demodulator has higher accuracy than the monitoring system composed of strain gauges, and maximum deviation value smaller 59.8%. The packaging structure of metallization method of embedded capillary copper tube combined with organic glue fixed is simple, high sensitivity, and precision, can meet the needs of large-scale construction machinery surface non-destructive real-time health monitoring.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87708879","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: 2

Error model analysis and correlation correction of Hartmann's focimeter 哈特曼焦距计误差模型分析及相关校正

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-03-22 DOI: 10.12086/OEE.2021.200238

Yang Jinlong, Jia Hongzhi, Jin Tao, Xiang Huazhong, Z. Dawei, Zhuang Song-lin

引用次数: 1

Research progress of computational microspectrometer based on speckle inspection 基于散斑检测的计算显微光谱仪研究进展

Guangdian Gongcheng/Opto-Electronic Engineering Pub Date : 2021-03-22 DOI: 10.12086/OEE.2021.200183

Zheng Qilin, Wen Long, Chengwei Qin

{"title":"Research progress of computational microspectrometer based on speckle inspection","authors":"Zheng Qilin, Wen Long, Chengwei Qin","doi":"10.12086/OEE.2021.200183","DOIUrl":"https://doi.org/10.12086/OEE.2021.200183","url":null,"abstract":"Fast, accurate and nondestructive spectral analysis technique is important and widely used in the fields of scientific research, information, biomedical, pharmaceutical detection, agriculture, environment, and security. However, the existing spectroscopic analysis equipments are usually bulky and complex, which are difficult to adapt to portable application scenarios such as on-site rapid detection, light-load platform, etc. In recent years, miniature spectroscopic detection technology and equipment have received extensive attention, and have been rapidly developed, with significant advantages in size, weight, and power consumption. In particular, the computational spectral analysis technology based on the speckle detection can obtain high-precision spectral information by recording and analyzing the speckle pattern formed by the scattering element on the measured light. This paper will first introduce the related technical principles and technological developments, then analyze the existing techniques including the advantages and disadvantages, and finally discuss and summarize the future development direction and application prospects.","PeriodicalId":39552,"journal":{"name":"Guangdian Gongcheng/Opto-Electronic Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75195736","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: 3