A number plate uniquely identifies the vehicle and provides information about the owner, model, date of purchase, and emission standard. It helps in smart traffic management, assisting legal procedures in law violations and police investigations, verifying access to private spaces, etc. Reserved parking requirements in bureaucratic buildings, restaurants, pubs, etc., are maintained using license plate recognition systems connected with high definition cameras and specific sensors which capture real-time information in the blink of an eye and store it in the database using the Optical Character Recognition technique. These automatic number plate recognition systems are highly compatible with modern security systems and are easy to install and configure.
What is OCR?
Optical Character Recognition is a process of translating extracting text from handwritten or printed material. This technique usually involves three steps: pre-processing, text processing, and post-processing. According to the type of license plate recognition system to be developed, OCR can be programmed in different languages like Java, objective C.
The automatic number plate recognition module is attached to a car parking system in many huge parking areas to determine vacancy and access control for the incoming vehicle. It works with the help of in-ground parking sensors to detect the vehicle using the magnetic field and vehicle weight, matching with the database for the existing vehicle entry and exit timestamp, and maintaining a queue if no vacant space is available. It is done at the automatic gates of the entry point. These gates have a vertical pole attached to a pivot which opens only when the car parking system stores all the details and suitable space is found in the parking space. Automatic gates provide the best access control, whether a house or office and are reliable in security and cost.
