Camera external parameter calibration method and device, computer equipment and storage medium

The invention relates to the technical field of computer vision, and discloses a camera external parameter calibration method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining a region image of a target region, reference serial number coordinates of reference intersection points between original straight lines in the target region, and three-dimensional coordinates of the reference intersection points in a preset world coordinate system; identifying two-dimensional coordinates of key intersection points among all straight lines in the area image and detecting serial number coordinates; determining a reference intersection point corresponding to each key intersection point; selecting a plurality of intersection point sets from all the key intersection points; for each intersection point set, determining a group of external parameters according to an internal parameter of a camera corresponding to the regional image, a two-dimensional coordinate of each key inter