Conference on Optics and Communication Technology最新文献_第3页

Decoupling features via global and local contexts in multi-object tracking 多目标跟踪中基于全局和局部上下文的解耦特征

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653540

Yixing Su, Hongbing Ma, Shengjin Wang

{"title":"Decoupling features via global and local contexts in multi-object tracking","authors":"Yixing Su, Hongbing Ma, Shengjin Wang","doi":"10.1117/12.2653540","DOIUrl":"https://doi.org/10.1117/12.2653540","url":null,"abstract":"Multi-object tracking (MOT) system usually consists of two tasks, object detection and re-identification (ReID). Current MOT methods tend to join detection and ReID in a single network to enhance inference speed. Such one-shot models allow joint optimization of detection and Re-ID via a shared backbone, reducing computation cost. However, the different demands of features between the two tasks in one-shot systems lead to competition in the optimization procedure. The detection task needs the features of the instances with the same class to be similar, while the ReID task needs the features of different instances to be distinguishable. Existing methods address the contradiction by disentangling the features into detection-specific and ReID-specific features. But these methods neglect the discussion of semantic interpretation of disentangling modules. In this paper, we propose a feature decoupling module, Global and Local Context-based Decoupling Module (GLCD), to disentangle features extracted by the backbone into two task-specific features. By extracting global and local contexts, the two tasks can choose different contexts by learnable parameters to enforce each self. We conduct our decoupling module into SOTA one-shot MOT method and experiments show performance improvement.","PeriodicalId":253792,"journal":{"name":"Conference on Optics and Communication Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125572973","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 the application of image processing technology in Chinese calligraphy style feature extraction 图像处理技术在中国书法风格特征提取中的应用研究

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653406

Weiqi Yu

引用次数: 0

Research on underwater optical communication technology based on RS coding and OFDM 基于RS编码和OFDM的水下光通信技术研究

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653444

Xiaole Zhang, Xiaochuan Tan, Z. Li, Shaobo Li, Biyao Wang

{"title":"Research on underwater optical communication technology based on RS coding and OFDM","authors":"Xiaole Zhang, Xiaochuan Tan, Z. Li, Shaobo Li, Biyao Wang","doi":"10.1117/12.2653444","DOIUrl":"https://doi.org/10.1117/12.2653444","url":null,"abstract":"Underwater wireless optical communication can realize short-distance, high-speed communication. It effectively supplements the vacancy of optical cable communication, radio communication and underwater acoustic communication in underwater networking. Using Orthogonal Frequency Division Multiplexing (OFDM) technology in underwater wireless optical communication can effectively reduce the influence of multipath effects in the channel and improve system communication performance. The error correction ability of Reed-solomon (RS) code under medium code length is close to the theoretical value. This letter analyzes the underwater optical channel model, simulates the underwater optical communication system based on RS coding and OFMD, and studies the influence of communication distance and signal-to-noise ratio (SNR) on bit error rate (BER), as well as the error code distribution in the presence of Doppler shift and the impact of interleaving on system performance. The simulation results show that the BER of received signal increases with the increase of communication distance and the decrease of SNR; When Doppler shift exists, error codes appear in concentrated positions. Deep interleaving can effectively utilize the error correction ability of RS coding, reduce the influence of Doppler shift, and improve the communication quality of the system.","PeriodicalId":253792,"journal":{"name":"Conference on Optics and Communication Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132764624","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

Improved YOLOv5 light source positioning method in multi-medium 改进了YOLOv5多介质光源定位方法

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653474

Ruitong Wei, Lei Yang

引用次数: 0

Data mining research based on decision tree algorithm taking the patient's condition data of respiratory department in hospital as an example 基于决策树算法的数据挖掘研究，以医院呼吸科患者病情数据为例

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653701

J. Tang, Wenjuan Zhao

引用次数: 0

Satellite video target tracking based on kernel correlation filtering and trajectory prediction 基于核相关滤波和轨迹预测的卫星视频目标跟踪

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653638

Xiong Liu, Hai-Dong Shang

引用次数: 0

Evolution of Pancharatnam-Berry phase on a hybrid-order Poincaré sphere based on vortex half-wave plates 基于涡旋半波板的混合阶poincarcarcarve球上Pancharatnam-Berry相的演化

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2654849

Rusheng Su, Y. Tu, R. Li, Tong Liu, Yuan Ren

引用次数: 0

A fusion imaging method based on amplitude compensation and correction for building layout 一种基于幅值补偿与校正的建筑布局融合成像方法

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653523

Peng Zou, Hongtu Xie, Jiaxing Chen, Zhitao Wu, Guoqian Wang

{"title":"A fusion imaging method based on amplitude compensation and correction for building layout","authors":"Peng Zou, Hongtu Xie, Jiaxing Chen, Zhitao Wu, Guoqian Wang","doi":"10.1117/12.2653523","DOIUrl":"https://doi.org/10.1117/12.2653523","url":null,"abstract":"Building layout surround-view imaging technology can obtain the internal information of the buildings, which has been widely used in the field of the anti-terrorism and combat. The problems of amplitude attenuation, wall widening, position offset, and multipath ghosts caused by the echoes in the process of penetrating between the building walls will bring the great inconvenience to the reconstruction of the building layouts. In this paper, a fusion imaging algorithm based on the amplitude compensation and correction for the building layout is proposed. First, after obtaining as many and accurate wall positions and wall lengths as possible through wall detection, the original image is segmented and then traversed through the adaptive thresholds. Besides, combined with the gray-scale linear method, the sub-images are enhanced, the clutter is suppressed, and its position has been corrected. Finally, the images obtained from multiple perspectives are fused to obtain the complete building layout image. Simulation results show that the proposed method can effectively compensate the attenuation, correct the wall position, suppress the multipath ghosts, and then finally obtain the high-quality and high-precision building layout image.","PeriodicalId":253792,"journal":{"name":"Conference on Optics and Communication Technology","volume":"8 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132757613","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

Self-powered flexible Sb2Se3/SnS2 broadband photodetector 自供电柔性Sb2Se3/SnS2宽带光电探测器

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653472

X. Weng, Chenxu Kang

引用次数: 0

A feature extraction and segmentation algorithm for cardiovascular calcification medical images 心血管钙化医学图像的特征提取与分割算法

Conference on Optics and Communication Technology Pub Date : 2022-11-18 DOI: 10.1117/12.2653579

Caizeng Ye, Jiong Zhang, Xiucui Wang, Jilin Qin

{"title":"A feature extraction and segmentation algorithm for cardiovascular calcification medical images","authors":"Caizeng Ye, Jiong Zhang, Xiucui Wang, Jilin Qin","doi":"10.1117/12.2653579","DOIUrl":"https://doi.org/10.1117/12.2653579","url":null,"abstract":"Cardiovascular disease (CVD) is a common disease related to the heart and blood vessels. Due to the lack of research on the characteristics and effect of cardiovascular calcification on hemodialysis patients in China, it is almost impossible to accurately extract, segment, and measure the cardiovascular calcified regions from the cardiovascular calcification image. This article proposed an algorithm to extract and segment the calcified regions based on image characteristics. Firstly, the dome method was used to obtain the approximate region of calcification and the basic extraction and segmentation algorithm was used to preprocess the calcified region. Then, the region of calcification was enhanced using the image enhancement method before being further processed by the basic algorithm. After that, the preprocessed segmented image was compared back to the original image and only the initial grey value of the common area was kept in the original image. Finally, the basic segmentation algorithm was utilized again to process the original image before the threshold division and binarization being performed to obtain the final segmentation results. The results indicated that our method can segment the calcified region more accurately and thus more accurate distinguishment of the calcified regions from the non-calcified regions can be achieved.","PeriodicalId":253792,"journal":{"name":"Conference on Optics and Communication Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122587367","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