• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2000년도 추계종합학술대회
• /
• pp.421-425
• /
• 2000

뉴스 비디오의 효과적인 검색을 위해서는 비디오데이터로부터 의미 있는 정보들을 추출할 수 있는 비디오 처리 및 편집기술의 개발이 요구된다. 이를 위하여 정보 선진국들을 중심으로 비디오 편집 기술이 오래 전부터 연구되어 왔으며, 최근에는 실생활의 완벽한 실용화를 위하여 연구에 중점을 두고 있는 실정이다. 본 논문은 비디오 데이터의 종류에 따라 사용자가 임의의 알고리즘을 선택하여 장면전환 검출의 정확성과 효율성을 높일 수 있으며, 시스템의 자동/수동분류에 의한 장면전환검출과 편집 시스템을 통하여 사용자의 요구에 따라 비디오 데이터로부터 의미 있는 정보들을 추출하고 편집할 수 있는 시스템을 제안한다.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2002년도 ITC-CSCC -1
• /
• pp.121-124
• /
• 2002

The proxy mechanism widely used in WWW systems offers low-delay data delivery by means of "proxy server". By applying the proxy mechanisms to the video streaming system, we expect that high-quality and low-delay video distribution can be accomplished without introducing extra load on the system. In addition, it is effective to adapt the quality of cached video data appropriately in the proxy if user requests are diverse due to heterogeneity in terms of the available bandwidth, end-system performance, and user′s preferences on the perceived video quality. We have proposed proxy caching mechanisms to accomplish the high-quality and highly-interactive video streaming services. In our proposed system, a video stream is divided into blocks for efficient use of the cache buffer. The proxy server is assumed to be able to adjust the quality of a cached or retrieved video block to the request through video filters. In this paper, to verify the practicality of our mechanisms, we implemented them on a real system and conducted experiments. Through evaluations from several performance aspects, it was shown that our proposed mechanisms can provide users with a low-latency and high-quality video streaming service in a heterogeneous environment.

• 한국산학기술학회:학술대회논문집
• /
• 한국산학기술학회 2011년도 춘계학술논문집 1부
• /
• pp.371-374
• /
• 2011

Recently, retrieval of various video data has become an important issue as more and more multimedia content services are being provided. To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safety-related educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2007년도 제38회 하계학술대회
• /
• pp.1665-1667
• /
• 2007

Recently, retrieval of various video data has become an important issue as more and more multimedia content services are being provided. To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safetyrelated educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 1998년도 하계종합학술대회논문집
• /
• pp.737-740
• /
• 1998

Under the worldwide booming internet environment, there has been increasing demand for various multimedia services. Especially the demand for effective video services has been rapidly increased. In this paper, we describe the implementation of video service system for internet use based on H/263 video compression technique and UDP socket on the TCP/IP environment. In addition, by using the plug-in-play technique, the implemented system improved user interface for correct retrieval and easy usage.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2000년도 추계종합학술대회 논문집(3)
• /
• pp.93-96
• /
• 2000

In this paper, we propose an efficient database system for video retrieval. Using the color spaces, it shows results of user's request. Each color space used following user's selection. We suggest adaptive three color systems for database. Experimental results based on a video database containing 331 shots are included.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2008년도 춘계종합학술대회 A
• /
• pp.306-309
• /
• 2008

A system realization for video surveillance with interframe probability distribution analysis is presented in this paper. The system design is based on a high performance DSP processor, video surveillance is implemented by analyzing interframe probability distribution for scanning objects in a restricted area and the video analysis algorithm is decided for forming a different image from the probability distribution of several frames compressed by the standardized JPEG. The algorithm processing time of D1($720{\times}480$) image per frame is 85ms.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2006년도 제37회 하계학술대회 논문집 D
• /
• pp.1951-1952
• /
• 2006

To effectively deal with video data, a semantic-based retrieval scheme that allows for processing diverse user queries and saving them on the database is required. In this regard, this paper proposes a semantic-based video retrieval system that allows the user to search diverse meanings of video data for electrical safetyrelated educational purposes by means of automatic annotation processing. If the user inputs a keyword to search video data for electrical safety-related educational purposes, the mobile agent of the proposed system extracts the features of the video data that are afterwards learned in a continuous manner, and detailed information on electrical safety education is saved on the database. The proposed system is designed to enhance video data retrieval efficiency for electrical safety-related educational purposes.

• 한국정보처리학회논문지
• /
• 제5권5호
• /
• pp.1264-1273
• /
• 1998

본 논문은 현재 MBone상에서 사용되는 화상회의 시스템들이 회의 제어 보다 더 효율적으로 화상회의를 제어하는 시스템을 구현하였다. 이 시스템은 비브로드캐스팅 네트워크 상에서 멀티캐스트 서비스를 제공하며 이는 여러개의 MTS(Multipoint Transport Server)를 통해 멀티미디어 데이타를 멀티캐스팅한다. 또한 CCS(Conference Control Server)를 통해 가안 결합성을 갖는 회의 제어 서비스를 제공한다. 본 논문에서 구현한 시스템은 강한 결합성을 갖는 회의 제어 서비스를 제공함으로서 보다 효율적으로 화상회의를 수행할 수 있다.

• 한국통신학회논문지
• /
• 제22권11호
• /
• pp.2498-2511
• /
• 1997

최근 컴퓨터 기술의 발전과 초고속 통신망의 구축으로 컴퓨터 기술과 통신망이 통합되어 통신 인프라(Infrastructure)를 소프트웨어 구조의 시스템으로 적용한 정보 통신망 구조(Information Networking Architecture)위에서 멀티미디어 서비스를 제공하는 연구 활동이 활발히 전개되고 있다. 본 논문에서는 멀티미디어 서비스의 기본이 되는 화상 회의 서비스를 선정하여, 개방형 정보 통신망 구조에 적용하여, 화상 회의 서비스 세션 관리를 객체 모델링 하였으며, 본 개방형 화상 회의 서비스를 통하여 세션 그래프와 연결 그래프간의 매핑 등의 세션 관리 객체 모델링과 개방형 서비스 플랫폼에 대한 기술들을 검증하였다.