real-time image capturing system for car plate recognition

9from the video while some cameras can capture the image continuously whether thevehicle exist in the video or not. There are three ways to detect the vehicle asmentioned in the following [7]:-2.3.1 Hardware TriggerThe hardware trigger equipment integrated in the camera module physicallycontrols a sensor directly installed in the lane. The camera will do the process ofcapture once a vehicle is present and detected by the sensor inside [7].2.3.2 Software TriggerThe software trigger camera has a sensor which is similar to the hardwaretrigger camera. But this type of camera will communicate with the client applicationwhich physically controls a sensor directly installed in the lane. Once the presenceof vehicle is detected by the sensor, the client application will communicate to thecamera module and begin the process of capturing [7].2.3.3 Free FlowFree flow does not need to receive signal from any external sensor, thecamera will take images continuously and it also can detect the vehicle automatically[7].