• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.1
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• pp.1-10
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• 2023

In this paper, the design and implementation of the long-distance wireless transmission technology of high-definition video using domestic wireless communication technology for the existing wired-based CCTV surveillance system and IP camera system was evaluated for performance. The interworking test between the wireless multi-IP camera transmission terminal device and the wireless communication RF module, and the wireless multi-IP camera-based video transmission system integration interworking test confirm the module interworking suitability during video transmission.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.5
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• pp.64-76
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• 2008

To increase road safety at blackspots, it is needed to develop a new method that can process before accident occurrence. Accident situation could result from traffic conflict. Traffic conflict decision technique has an advantage that can acquire and analyze data in time and confined space that is less through investigation. Therefore, traffic conflict technique is highly expected to be used in many application of road safety. This study developed traffic conflict decision program that can analyze and process from signalized intersection image. Program consists of the following functional modules: an image input module that acquires images from the CCTV camera, a Save-to-Buffer module which stores the entered images by differentiating them into background images, current images, difference images, segmentation images, and a conflict detection module which displays the processed results. The program was developed using LabVIEW 8.5 (a graphic language) and the VISION module library.

• Journal of the Korea Computer Graphics Society
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• v.16 no.1
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• pp.1-7
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• 2010

With the widespread use of vision-based surveillance systems, the capability for person identification is now an essential component. However, the CCTV cameras used in surveillance systems tend to produce relatively low-resolution images, making it difficult to use face recognition techniques for person identification. Therefore, an algorithm is proposed for person identification in CCTV camera images based on the clothing. Whenever a person is authenticated at the main entrance of a building, the clothing feature of that person is extracted and added to the database. Using a given image, the clothing area is detected using background subtraction and skin color detection techniques. The clothing feature vector is then composed of textural and color features of the clothing region, where the textural feature is extracted based on a local edge histogram, while the color feature is extracted using octree-based quantization of a color map. When given a query image, the person can then be identified by finding the most similar clothing feature from the database, where the Euclidean distance is used as the similarity measure. Experimental results show an 80% success rate for person identification with the proposed algorithm, and only a 43% success rate when using face recognition.

• Proceedings of the Korean Society of Computer Information Conference
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• 2012.07a
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• pp.221-222
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• 2012

본 논문에서는 CCTV가 설치된 엘리베이터 안에서 촬영한 영상을 대상으로 절도 범죄를 범하는 경우를 대상으로 범죄를 분석하여 수사하는데 영상 자료로 제출하도록 하였다. 영상에서 나타나는 것처럼 장면 전환 검출을 하면 쉽게 영상에서 절도죄를 포착할 수 있다.

• Broadcasting and Media Magazine
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• v.20 no.3
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• pp.67-75
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• 2015

최근 범죄 예방을 위해 감시영상에서 폭력행위 검출에 대한 영상 분석 기술의 요구가 증가하고 있지만 지금까지의 폭력행위 검출 기술은 영화 또는 YouTube의 폭력장면 검출에 초점이 맞추어져 있다. 영화에서 촬영된 폭력 장면에는 주로 피를 흘리는 모습들이 자주 등장하기 때문에 색상 특징을 이용한 알고리즘을 많이 사용하였다. 하지만 실제 CCTV에서 촬영된 폭력행위는 피가 묻은 장면이 자주 발생하지 않기 때문에 영화 속 폭력장면 검출 알고리즘과는 차별성이 있어야 한다. 본 고에서는 국내외 폭력 행동 분석에 대한 기술 동향을 살펴보고 감시영상에서의 폭력 행동 검출하는 기술에 대해 살펴보고자 한다.

• Photonics industry news
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• s.38
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• pp.24-29
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• 2007

CCTV 산업은 보안산업의 일종이며 종래에는 CCTV 카메라에서 찍은 영상정보를 아날로그 방식으로 VCR에 저장하여 사용하였으나, 테이프 교체의 불편함과 반복사용에 따른 화질의 열화 등 많은 문제점을 안고 있어 최근에는 DVR로 대체되고 있는 추세이다. 현재 국내시장에서 아날로그 VCR 대 DVR의 비율은 70:30 정도로 추정되고 있으며, 통신기술의 발전으로 인한 네트워크망 확대 및 인터넷의 급속한 보급으로 인해 DVR의 보급이 급속히 높아지고 있는데, J.P Freeman 보고서에 따르면, 세계 DVR 시장규모는 2002년 7억 2천만 달러에서 2005년도 24억 달러로 확대되어 연평균 47%의 고성장 하고 있다고 발표하였다. 그리고, DVR의 VCR 대체율 역시 2002년 13%에서 2005년 45%에 이른 것으로 보고 있으며, 앞으로 설치하거나 교체하는 시스템은 VCR 대신 DVR을 선택할 것을 예측할 경우 2010년에는 전체 VCR의 90% 이상이 DVR로 교체될 것으로 전망되고 있다.

• Proceedings of the Korean Information Science Society Conference
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• 2012.06b
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• pp.432-434
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• 2012

본 논문에서 우리는 고정된 교통 CCTV 카메라 화면 내에 존재하는 배경의 동적 요소틀을 효과적으로 모델링 할 수 있는 새로운 배경 모델을 제안하고자 한다. 우리의 모델은 [1]에서 제안했던 multiple-thresholded local binary patterns(MTLBP)배경 모델을 확장한 것으로, 가우시안 필터를 통해 화면의 분산된 국부정보를 수집함으로써 움직이는 나뭇가지등과 같은 배경의 동적 요소를 제거한다. 우리는 다양한 실험 결과를 통해 제안하는 기법이 저해상도의 영상에 대해서도 매우 빠르고 정확하게 동작할 수 있으며, 따라서 실제의 응용 시스템에 적합함을 보일 것이다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2011.04a
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• pp.136-141
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• 2011

In a power plant, an oil and steam leakage is generated once in a while. This is because the operating temperature and pressure of oil are very high. It is very difficult to monitor oil leakage, because oil leakage is almost invisible. Therefore a method to oil leakage detecting quickly and accurately is needs. In this paper, we proposed the method for the detecting oil leakage by using image processing and CCTV. To test the performance of this technique, experiments have been performed for simple case. Results show that the proposed technique is quite powerful in the oil leak detection.

• Journal of Korea Society of Industrial Information Systems
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• v.12 no.4
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• pp.148-152
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• 2007

This paper develops an integrated optic transmitter/receiver based on ring-type WDM PON. The optic transmitter/receiver can transmit real-time images from the CCTV of a remote street without compression and transmit TCP/IP data using an optic fiber. This system can also perform remote controls of the CCTV camera. The developed optic transmitter/receiver can provide the monitoring service of an advanced image quality of remote traffic using a broadband technology.

• Journal of the Korean Society of Safety
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• v.28 no.1
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• pp.1-5
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• 2013

In this paper, the finite element analysis using ADINA has performed to investigate an accident that a man's head was damaged by the falling object. The simulation condition has defined by the point of forensic medicine view and the CCTV image analysis. From the CCTV image analysis, we expected that the sphere diameter of object is 15cm and object color is white. Assuming the falling mass is the ice mass, the results of the ADINA simulation show that a man's head can be broken by the falling ice mass.