Automatic parking optimization method and system and vehicle

The invention provides an automatic parking optimization method and system and a vehicle, and the method comprises the following steps: obtaining vehicle parameters and camera parameters, collecting image information through a vehicle camera, and obtaining target parking space parameters according to the image information; according to the vehicle parameters and the target parking space parameters, the vehicle pose under the global coordinate system is converted into the vehicle pose under the target parking space coordinate system, and a rear axle center coordinate is solved; inputting the image information, the vehicle parameters, the camera parameters, the target parking space parameters and the vehicle pose under the target parking space coordinate system into a repositioning algorithm module, and calculating to obtain positioning parameters; updating the vehicle pose under the target parking space coordinate system and updating the target parking space width value according to the positioning parameters;