• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.7-13
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• 2019

Unlike a typical video wall system, video wall systems used for integrated monitoring in smart city environments should be able to display various videos, images, and texts simultaneously. In this paper, we propose an Internet Protocol (IP)-based video wall system that has no limit on the number of videos that can be monitored simultaneously, and that can arrange the monitor screen layout without restrictions. The proposed system is composed of multiple display servers, a wall controller, and video source providers, and they communicate with each other through an IP network. Since the display server receives and decodes the video stream directly from the video source devices, and displays it on the attached monitor screens, more videos can be simultaneously displayed on the entire video wall. When one video is displayed over several screens attached to multiple display servers, only one display server receives the video stream and transmits it to the other display servers by using IP multicast communications, thereby reducing the network load and synchronizing the video frames. Experiments show that as the number of videos increases, a system consisting of more display servers shows better decoding and rendering performance, and there is no performance degradation, even if the display server continues to be expanded.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.24 no.2
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• pp.1-6
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• 2024

In this paper, we designed and implemented the security network NVR system that can flexibly use the internal network and VPN network. In general, the NVR systems that only use internal networks cannot be access from the outside, which has the disadvantage of unnecessary inspections and inability to access from the outside. External access has made possible using the VPN security network, and a NVR system software was designed and implemented so that the existing internal network could be used. We compared with the NVR system usage environment in the internal network through the client and the NVR system. It also has implemented usage environment with the VPN network through the mobile APP, and confirmed that the same NVR was operating normally with the same functions. We also studied on IP based NVR for flexible access with closed loop network based on VPN system.

• Electronics and Telecommunications Trends
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• v.23 no.4
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• pp.80-88
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• 2008

9.11 사태 이후, 세계 각국은 개인 및 공공의 안전을 위한 국토보안에 대한 중요성을 한층 더 실감하고 이에 대한 노력을 더욱 강화하고 있으며, 이러한 과정에서 지능형 영상보안 기술의 개발 및 활용에 대한 중요성이 날로 증대되고 있다. 아날로그 CCTV에서 디지털 저장장치, IP 기반기술과의 결합과 지능형 영상인식에 이르기까지 영상보안 기술은 지속적인 진화를 거듭하고 있다. 이에 따라 기존의 시설물과 출입자에 대한 수동적인 녹화 및 감시에서 실시간으로 상황을 인지하고 자율대응할 수 있는 네트워크 기반의 지능형 시스템으로 발전하고 있다. 또한 공항, 군사, 항만, 도로, 교량 등 주요 국가시설, 지하철, 버스, 사무실, 카지노에서 산불감시에 이르기까지 매우 다양한 분야로 그 응용영역을 확대하고 있는 추세에 있다. 본 고에서는 이러한 배경을 토대로 영상 보안 기술의 현황과 시장동향, 지능형 영상보안 및 Human ID 기술, 최근 이슈와 발전 방향에 관하여 살펴보고자 한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.10a
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• pp.809-813
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• 2004

In this paper, we developed a network camera for CMOS camera module inspection. The design, implementation details including embedded linux porting and CPLD logics, and performance of network camera are described. The network camera consists of SoC(S3C4530A), CPLD and CMOS image sensor. In order to image data of CMOS image sensor we designed capture logics on CPLD by using VHDL program. Embedded Linux such as uClinux is performed on the network camera to utilize development environment and TCP/IP protocol specification. The application is based on socket communication between GUI on PC and Embedded Linux based network camera. When JPEG compression is applied, the transmission speed was improved enough for this system to be used for an alternative of expensive CCTV or remote monitoring system in a power plant and uninhabited places.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.663-665
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• 2009

현대 사회는 정보의 중요성이 부각되고, 유무선 네트워크 기술이 발전함에 따라 이동 중에 통신 서비스가 가능한 환경으로 변화하고 있다. 특히, 정보화 기기가 소형화, 지능화됨에 따라 이 기기들이 자유롭게 네트워크에 연결되어 정보를 공유할 수 있는 유비쿼터스(ubiquitous) 환경의 필요성은 더욱 증가하고 있다. uMC는 도시의 모든 기반 시설물을 관리, 관제하고 운용하는 새로운 개념의 도시 통합관제 센터로 기존의 소방 방재센터, CCTV, 경찰청 등의 단위 시스템별 관제 센터 등을 물리적으로 통합하고 모든 시설물과의 네트워크 통신 등을 통합 관리하는 도시 관리의 중추적인 역할을 수행한다. 본 논문에서는 uMC에 접속하는 과정에서 접근 및 보안성을 강화하기 위해 네트워크상에 존재하는 단말기기에 효율적으로 IP를 할당하고 인증 할 수 있는 방안을 연구한다.

• Korean Security Journal
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• no.19
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• pp.225-244
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• 2009

Electronic security system is composed mainly of electronic-information-communication device, so system technology, configuration and management of the electronic security system could be affected by the change of information-communication environment. This study is to propose the future prospect on the development of technique for electronic security system through the analysis of the trend and the actual condition on the development of technique. This study is based on literature study and interview with user and provider of electronic security system, also survey was carried out by system provider and members of security integration company to come up with more practical result. Hybrid DVR technology that has multi-function such as motion detection, target tracking and image identification is expected to be developed. And 'Embedded IP camera' technology that internet server and image identification software are built in. Those technologies could change the configuration and management of CCTV system. Fingerprint identification technology and face identification technology are continually developed to get more reliability, but continual development of surveillance and three-dimension identification technology for more efficient face identification system is needed. As radio identification and tracking function of RFID is appreciated as very useful for access control system, hardware and software of RFID technology is expected to be developed, but government's support for market revitalization is necessary. Behavior pattern identification sensor technology is expected to be developed and could replace passive infrared sensor that cause system error, giving security guard firm confidence for response. The principle of behavior pattern identification is similar to image identification, so those two technology could be integrated with tracking technology and radio identification technology of RFID for total monitoring system. For more efficient electronic security system, middle-ware's role is very important to integrate the technology of electronic security system, this could make possible of installing the integrated security system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.7
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• pp.1325-1334
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• 2016

The video incident detection System is a probe for rapid detecting the walker, falling, stopped, backwards, smoke situation in tunnel. Recently, the importance is increases from the downtown double deck tunnel in great depth underground space[1], but the legal basis is weak and the vulnerable situation experimental data. So, In this paper, we introduce a long-term log data analysis information in the tunnenl video incident detection system installed and experimental results in order to verify the feasibility of apply to video incident detection system for the double deck tunnel. It is proposed a few things about derives the problem of existing video incident detection system, improvements and reflect attributes for double deck tunnel. The contents described in this paper will contribute to refine the prototype of video incident detection system will apply to future double deck multi-layer tunnels.

• Proceedings of the IEEK Conference
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• 2007.07a
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• pp.99-100
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• 2007

Rapid developments of industry and economics have made a metropolis which demands an effective urban transport management system (UTMS). Specially, this paper considers a subway surveillance system based on integrated wireless LAN technologies for public safety. Since a current subway platform security entirely relies on conventional closed circuit television camera (CCTV) or human operators, subway train drivers cannot detect platform states and cope with abnormal situations or accidents immediately. However, through the IP cameras and some wireless routers, high qualify images of the platform conditions can be directly delivered to the train drivers and other station employees in advance of train entering the platform. In this paper, several design issues and problems are discussed when building up the subway management system. Further, we illustrate a system model with the system requirements in real parametric values in order to draw concrete system designs and to realize a practical implementation of the future UTMS.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.10a
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• pp.6-9
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• 2015

현대인들의 생활수준 향상과 기술의 발전에 따라 보안, 안전 등 미처 고려되지 않던 분야들이 다양한 영역에서 부각되면서 CCTV, IP카메라, 차량용 블랙박스와 같은 영상기반 시스템에 대한 시장수요가 증가하고 있다. 이에 맞춰 다양한 영상기반 시스템들이 개발되고, 개발 단계에서 낭비되는 시간을 줄이기 위해 프로토타이핑의 필요성이 대두되고 있지만 기존의 프로토타이핑을 위한 도구는 비용이나 속도측면에서 제한적이다. 본 논문에서는 영상기반 시스템 중 블랙박스의 하드웨어를 풀 시스템 에뮬레이터를 이용하여 모델링하고 수행되는 명령어 추출을 통해 시스템의 특성을 예측할 수 있는 하드웨어 프로토타이핑 도구를 제안한다. 또한 ARM 시스템용으로 컴파일 된 프로그램의 실행 여부를 확인하고, 프로그램을 구성하는 명령어와 추출도구를 통해 추출된 명령어를 비교하여 동작을 확인한다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.1
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• pp.76-81
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• 2018

The Internet of Things (IoT), which is emerging as a future economic growth engine, has been actively introduced in areas close to our daily lives. However, there are still IoT security threats that need to be resolved. In particular, with the spread of smart homes and smart cities, an explosive amount of closed-circuit televisions (CCTVs) have been installed. The Internet protocol (IP) information and even port numbers assigned to CCTVs are open to the public via search engines of web portals or on social media platforms, such as Facebook and Twitter; even with simple tools these pieces of information can be easily hacked. For this reason, a big-data analytics system is needed, capable of supporting quick responses against data, that can potentially contain risk factors to security or illegal websites that may cause social problems, by assisting in analyzing data collected by search engines and social media platforms, frequently utilized by Internet users, as well as data on illegal websites.