Video Based Number Plate Recognition

Abstract

This system constantly processes incoming camera footage to detect any trace of number plates. While detecting a number plate in front of the camera, it processes the camera input and extracts the number plate image from the video. Processes the extracted image and extracts the number plate number from it using easy-ocr. Thus, put forward a fully functional vehicle number plate recognition system using video based number plate recognition. Even for camera surveillance based security system, Important and difficult task is to recognize a car number plate from video. So here we come up with a solution. Extract the license plate from an image using some computer vision techniques and then use Optical Character Recognition to recognize the license number. Extraction of license plate image from car-image detection algorithms (otshu threshold method), Preprocessing-noise removal, gray scale conversion, edge detection etc., Plate extraction, Character segmentation. To design and develop a license plate detection and recognition system, will work efficiently under the conditions of slow moving objects and the objects which are merged into the background due  to different traffic environment conditions, robustness against progressive or sudden illumination changes, Occlusions, identification time of the system should be as short as possible. The system should detect all the types of vehicles, recognize all the license plates of the country and should also be resistant to any kinds of disturbances, which may occur in images and mechanical plate damages which may appear in reality. The attributes of the License plates play important role in the recognition process. The size, colour of the license plate, its font face i.e. size, colour of each character, spacing between characters, the number of lines in the license plate. Video processed number plate recognition is the identification system of vehicles for collecting the toll payment. The way to identify the moving vehicle on the tollgate is by identifying the number plate which is achieved by image processing algorithm. Recognizing vehicle number plates is purely localized and difficult to follow the standard pattern assigned by the government, so the recognition is quite difficult but it is much needed system.