SYSTEM FOR AUTOMATIC INSTALLATION OF DETECTION AREA USING PANNING TILTING AND ZOOMING TRANSFORMATION OF CCTV CAMERAS

PURPOSE: A detection area set-up system of a CCTV(Closed Circuit Television) is provided to enhance the accuracy of traffic information by automatically collecting traffic information using the panning, tilting, and zooming functions of a CCTV. CONSTITUTION: A detection area set-up system(100) of a CCTV comprises a CCTV camera(110), a video input unit(120), an element value calculating unit(130), a communication unit(140), a coordinate converting unit(150), a correcting unit(160), and a preset unit(170). The CCTV camera is installed on a road to photograph the road. The video input unit compresses the images inputted via the CCTV and transfers the compressed image to a traffic center. The element value calculating unit consists of an A/D(Analog to Digital) converter, a CPU(Central Processing Unit), a pan/tilt driver, a zoom driver, a communication driver, and a power driver. The element value calculating unit calculates the panning value, tilting value, and zooming value of the CCTV camera when panning, tilting, and zooming are performed. The communication unit transfers the element values and images to the traffic center by multiplexing a video link and a data link. The coordinate converting unit calculates a coordinate conversion on a three-dimensional space by a coordinate converting algorithm. The correcting unit installed in the traffic center automatically sets up a detection area by considering a mechanical error and corrects the detection area. Therefore, accurate traffic condition is obtained. 본 발명은 CCTV 카메라의 Panning, Tilting, Zooming 변환에 따른 검지영역 자동설정 시스템에 관한 것이다. 본 발명은 고속도로 및 도심교차로, 국도 등에 설치되어 있거나 또는 신도로의 건설로 앞으로 설치될 예정인 CCTV 카메라에 교통 정보를 자동으로 수집할 수 있는 영상검지기 기능을 부가하기 위하여 CCTV 카메라의 Panning, Tilting, Zooming 변환이 이루어 질 때마다 CCTV 카메라에서 들어오는 영상에서 도로의 각 차로 별로 검지영역을 자동으로 설정해 줌으로써 차로별 검지영역에서 교통량, 차량 평균속도, 점유율 등의 교통 정보를 수집하는 검지영역 자동설정 시스템이다.