• Title/Summary/Keyword: Real-time applications

Search Result 2,353, Processing Time 0.023 seconds

Design and Implementation of CCTV Remote Real-time Monitoring and Context Reporting System using Xcode (Xcode를 이용한 CCTV 원격 실시간 모니터링 및 상황 알림보고 시스템의 설계 및 구현)

  • Yang, Soo-Mi;Kim, Yu-Rim
    • Convergence Security Journal
    • /
    • v.15 no.1
    • /
    • pp.83-89
    • /
    • 2015
  • In the wide area surveillance system including many CCTVs, application for remote realtime monitoring is designed and implemented. The applications using Xcode provide secure administrator interface from headquarters. Through the efficient and intuitive interface, it delivers real-time context reports and inference results. For the user convenience, it includes push alarm of events, SNS, Media streaming service for real-time monitoring uses Wirecast and Wowza media server. Wowza stream engine provides URL accommodating development specification. Mobile devices can receive real-time stream data. Performance evaluation in the processing is provided.

Real-Time Vehicle Detector with Dynamic Segmentation and Rule-based Tracking Reasoning for Complex Traffic Conditions

  • Wu, Bing-Fei;Juang, Jhy-Hong
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.5 no.12
    • /
    • pp.2355-2373
    • /
    • 2011
  • Vision-based vehicle detector systems are becoming increasingly important in ITS applications. Real-time operation, robustness, precision, accurate estimation of traffic parameters, and ease of setup are important features to be considered in developing such systems. Further, accurate vehicle detection is difficult in varied complex traffic environments. These environments include changes in weather as well as challenging traffic conditions, such as shadow effects and jams. To meet real-time requirements, the proposed system first applies a color background to extract moving objects, which are then tracked by considering their relative distances and directions. To achieve robustness and precision, the color background is regularly updated by the proposed algorithm to overcome luminance variations. This paper also proposes a scheme of feedback compensation to resolve background convergence errors, which occur when vehicles temporarily park on the roadside while the background image is being converged. Next, vehicle occlusion is resolved using the proposed prior split approach and through reasoning for rule-based tracking. This approach can automatically detect straight lanes. Following this step, trajectories are applied to derive traffic parameters; finally, to facilitate easy setup, we propose a means to automate the setting of the system parameters. Experimental results show that the system can operate well under various complex traffic conditions in real time.

A Real-Time Control Technique of Media Stream in Embedded Web Streaming (임베디드 웹 스트리밍에서의 미디어 스트림의 실시간 제어 기술)

  • Lee, Hyun-Ju;Kim, Sang-Wook
    • Journal of KIISE:Software and Applications
    • /
    • v.32 no.11
    • /
    • pp.1029-1035
    • /
    • 2005
  • Web streaming environment need a suitable video playback service technique, a streaming technique for real-time delivery and an efficient control technique due to its limited environment. In this paper, we propose an effective control technique for real-time media stream playback as a connection technique between the high-quality media player and web browser based on Linux environment. The proposed stream control technique presents control data through 050 on media playback screen of web browser, and process the user's input data. It acts GUI-independently, and is designed considering addition and extension for control data.

Real-time Networked 2K Video Transfer with Light-weight Software CODEC (Light-weight 소프트웨어 CODEC을 이용한 2K 영상의 실시간 네트워크 전송에 관한 연구)

  • Jo, Jin-Yong;Park, Jong-Churl;Moon, Jeong-Hoon;Kwak, Jai-Seung;Kim, Jong-Won
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.33 no.10B
    • /
    • pp.919-927
    • /
    • 2008
  • The growing availability of broadband multimedia applications are providing strict real-time services and enabling users to feel much interactivity as well as 'sense of presence'. In that sense, there would be increased demand for what network and system have to do to fulfill the user expectations. In this paper, we implement a real-time multimedia application which make use of real-time DXT CODEC and investigate what the challenges of networking and system are. We carry out various experiments over a research network test-bed to evaluate the performance of our proposals.

Development of Real-time Environment Monitoring System Using 3G Integrated Environmental Sensors Based on AWS (AWS기반 3G 통합환경센서 모듈을 이용한 실시간 환경 모니터링 시스템 개발)

  • Chun, Seung-Man;Lee, Seung-Jun;Yun, Jang-Kyu;Suk, Soo-Young
    • IEMEK Journal of Embedded Systems and Applications
    • /
    • v.13 no.2
    • /
    • pp.101-107
    • /
    • 2018
  • As indoor pollutants such as carbon dioxide and dust mainly affect the respiratory and circulatory systems, there is an increasing need for real-time indoor / outdoor environmental monitoring. In this paper, we have developed a real - time environmental monitoring system using the cloud-based 3G integrated environmental sensor module for environmental monitoring. A highly reliable environmental information monitoring system requires various IT technologies such as infrastructure (server, commercial software, etc.), service application software, security, and authentication. A real-time environment monitoring system based on cloud service that can provide reliable service satisfying these configuration requirements is proposed and implemented. It is expected that this system can be applied to various technologies such as indoor automatic window opening/closing system based on the Internet.

Real-Time Object Segmentation in Image Sequences (연속 영상 기반 실시간 객체 분할)

  • Kang, Eui-Seon;Yoo, Seung-Hun
    • The KIPS Transactions:PartB
    • /
    • v.18B no.4
    • /
    • pp.173-180
    • /
    • 2011
  • This paper shows an approach for real-time object segmentation on GPU (Graphics Processing Unit) using CUDA (Compute Unified Device Architecture). Recently, many applications that is monitoring system, motion analysis, object tracking or etc require real-time processing. It is not suitable for object segmentation to procedure real-time in CPU. NVIDIA provide CUDA platform for Parallel Processing for General Computation to upgrade limit of Hardware Graphic. In this paper, we use adaptive Gaussian Mixture Background Modeling in the step of object extraction and CCL(Connected Component Labeling) for classification. The speed of GPU and CPU is compared and evaluated with implementation in Core2 Quad processor with 2.4GHz.The GPU version achieved a speedup of 3x-4x over the CPU version.

Web-based Application Service Management System for Fault Monitoring

  • Min, Sang-Cheol;Chung, Tai-Myoung;Park, Hyoung-Woo;Lee, Kyung-Ha;Pang, Kee-Hong
    • Journal of Electrical Engineering and information Science
    • /
    • v.2 no.6
    • /
    • pp.64-73
    • /
    • 1997
  • Network technology has been developed for very high-speed networking and multimedia data whose characteristics are the continuous and bursty transmission as well as a large amount of data. With this trend users wish to view the information about the application services as well as network devices and system hardware. However, it is rarely available for the users the information of performance or faults of the application services. Most of information is limited to the information related network devices or system hardware. Furthermore, users expect the best services without knowing the service environments in the network and there is no good way of delivering the service related problems and fault information of application services in a high speed network yet. In this paper we present a web-based application management system that we have developed for the past year. It includes a method to build an agent system that uses an existing network management standards, SNMP MIB and SNMP protocols. The user interface of the system is also developed to support visualization effects with web-based Java interface which offers a convenient way not only to access management information but also to control networked applications.

  • PDF

Framework for a real-time control system of sewer systems (하수도 시스템의 실시간 제어시스템 구축 방안)

  • Ryu, Jaena;Baek, Hyunwook;Kim, Tae-Hyoung;Oh, Jeill
    • Journal of Korean Society of Water and Wastewater
    • /
    • v.27 no.5
    • /
    • pp.649-659
    • /
    • 2013
  • Real time control (RTC) can be broadly defined as a system that dynamically adjusts the operation of facilities in response to online measurements in the field to maintain and meet the operational objectives, both during dry and wet weather conditions. RTC adds a dynamic component that is actively adjusted in real time based on system conditions. In terms of reducing or eliminating sewer flooding, CSOs and/or managing flows, implementation of RTC has various benefits to sewer system operation. It has been emerging as an attractive approach, but related elements (such as framework for the application, its components and equipments, aspects to be considered) towards its application on sewer systems have not been throughly introduced so far. The main goal of this study is to review several applications of RTC and firm guidelines published abroad, and finally to provide a framework for the proper application of RTC on sewer systems.

Radiological Alert Network of Extremadura (RAREx) at 2021:30 years of development and current performance of real-time monitoring

  • Ontalba, Maria Angeles;Corbacho, Jose Angel;Baeza, Antonio;Vasco, Jose;Caballero, Jose Manuel;Valencia, David;Baeza, Juan Antonio
    • Nuclear Engineering and Technology
    • /
    • v.54 no.2
    • /
    • pp.770-780
    • /
    • 2022
  • In 1993 the University of Extremadura initiated the design, construction and management of the Radiological Alert Network of Extremadura (RAREx). The goal was to acquire reliable near-real-time information on the environmental radiological status in the surroundings of the Almaraz Nuclear Power Plant by measuring, mainly, the ambient dose equivalent. However, the phased development of this network has been carried out from two points of view. Firstly, there has been an increase in the number of stations comprising the network. Secondly, there has been an increase in the number of monitored parameters. As a consequence of the growth of RAREx network, large data volumes are daily generated. To face this big data paradigm, software applications have been developed and implemented in order to maintain the indispensable real-time and efficient performance of the alert network. In this paper, the description of the current status of RAREx network after 30 years of design and performance is showed. Also, the performance of the graphing software for daily assessment of the registered parameters and the automatic on real time warning notification system, which aid with the decision making process and analysis of values of possible radiological and non-radiological alterations, is briefly described in this paper.

Performance Comparisons of Duplex Scheme and Checkpointing Scheme for Fault-Tolerant Real-Time Systems (결함허용 실시간 시스템을 위한 이중화 기법과 체크포인팅 기법의 성능 비교)

  • Im, Seong-Hwa;Kim, Jae-Hun;Kim, Seong-Su
    • The Transactions of the Korea Information Processing Society
    • /
    • v.6 no.9
    • /
    • pp.2533-2539
    • /
    • 1999
  • Two scheme are widely used for fault-tolerant systems : one is the duplex system that has a physical redundancy, and the other one is the checkpointing scheme that rolls back to the last checkpoint at a failure. The average execution time and availability are important factors for measuring the performance of the fault-tolerant systems. However, in fault-tolerant real-time systems with a time constraint, meeting the time constrain instead of reducing the average execution time is the most important factor in the performance evaluation. We analyze and compare the performance of two fault-tolerant scheme (the duplex system and the checkpointing scheme) for real-time applications.

  • PDF