real-time image capturing system for car plate recognition

132.5.2 Decentralized IP CameraA decentralized IP camera does not require a NVR as the IP camera has thebuilt-in function of recording and the record can be directly save to mass storagedevice [9].2.6 Video Signal TransmissionFor the Car Plate Recognition System manufactured by Philex EnterpriseInc., it is using 1/3” progressive scan RGB CCD Axis camera. The camera has thelens with the following specifications: - varifocal 3.0-8.0mm, DC-iris, 1/25000s to 2sshutter speed. Besides that, the output video compression is MPEG-4 format and theimage captured format is motion JPEG. The frame rate of MPEG-4 can be up to30fps (frame per second) at 640x480 resolutions [11].In real-time car plate recognition system application, the Axis IP cameracarry out the recording process at the standard sampling rate of 30 frames per second.It is enough to provide real-time flow of vehicle scenes. The camera is connected bynetwork cable into the server via IEEE 802.3x network port. Once the whole systemis activated, the video images can be viewed and image will be captured at theresolution of 640x480 pixels. When video capturing process was done at thetargeted area, the information captured of the plate alphanumeric, lane identification,date-time or other extra information will be transmitted to some computer server inform of small data packet [11]. The purpose of using server computer is to allow theapplication to convert an analogue video to a compressed digital video. It providesaccess to the data packet via IP network [12]. The real-time video clips inside thedata packet will be examined by using License Plate Recognition (LPR) browserapplication. The clips can be viewed in real time or other speeds, the video can alsocan play forward or backward, or step through the frames individually [11]. Figurebelow show the real-time image capturing concept of Car Plate Recognition Systemmanufactured by Philex Enterprise Inc.:-