AUTONOMOUS DRIVING SYSTEM AND AUTONOMOUS DRIVING METHOD

Disclosed herein an autonomous driving system includes a first sensor installed in a vehicle, having a field of view facing in front of the vehicle, and configured to acquire front image data; a second sensor selected from the group consisting of a radar and a light detection and ranging (lidar), installed in the vehicle, having a detection field of view facing in front of the vehicle, and configured to acquire forward detection data; a communicator configured to receive a high definition map at a current location of the vehicle from an external server; and a controller including a processor configured to process the high definition map, the front image data, and the forward detection data; wherein the controller is configured to calculate a first distance between the vehicle and a right road boundary line and a second distance between the vehicle and a left road boundary line in response to processing the front image data and the forward detection data, calculate a third distance between the vehicle and the right road boundary line and a fourth distance between the vehicle and the left road boundary line in response to processing the high definition map, and determine a map quality index of the high definition map based on the first distance, the second distance, the third distance, and the fourth distance, and determine an error of the high definition map based on the map quality index.