The traditional OEM factory surround view system supplements the reversing camera with three more cameras - one in the front apron and one in each lower trim of the exterior mirrors. Based on the information supplied by all four cameras, the system generates a virtual bird’s eye view of the car and displays it on the in dash car radio screen. It is also possible to switch between various camera views to improve visibility. As it is integrated in the factory car electric system, it has the status of turning lights and current position of the steering wheel, so it has more options for driver to use.
If you plan on installing an aftermarket 4-camera based surround view parking assist system,you will find the installation too difficult to finish installation. ATOTO AC-SC3601 rearview parking assist system uses single camera to provide a surround virtual top view, that captures and displays all the areas the camera have seen since it starts to work. That being said, it scanned & remembered all the surroundings since it starts to work, and rebuilt a dynamic,simulative but almost same-size ratio surroundings view (where the barriers, other vehicles, or your vehicle is).