Parking spot detection system and method thereof

A parking spot detection system, comprising:

• a detection unit, used for emitting a plurality of light signals and acquiring position data and intensity data of a plurality of data points in an environment space according to return of each light signal which is excited in the environment space;
• a map database, used for providing map data;
• and
• a processing unit, coupled to the detection unit and the map data map database and used for determining whether a geometric shape formed by adjacent data points is of a parking space according to the intensity data of the data points, wherein
• if the geometric shape is determined to be of the parking space, the processing unit further integrates the geometric shape and a position of the parking space into the map data according to the position data of the data points,
• wherein the processing unit further acquires height data corresponding to and above the geometric shape according to the intensity data and the position data of the data points and determines whether the height data is less than a vehicle height, and
• in response to determining that the height data is less than the vehicle height, the processing unit determines that the geometric shape is not the parking space.