Target object positioning method and device, storage medium and electronic equipment

In the target object positioning method provided by the specification, firstly, key point extraction is performed on a historical monitoring image acquired by monitoring equipment, the extracted key points are matched with a pre-constructed three-dimensional point cloud picture corresponding to a monitoring range of the monitoring equipment, and three-dimensional coordinates of the key points are determined; the method comprises the steps of obtaining three-dimensional coordinates of a monitoring device, determining an external parameter matrix of the monitoring device through the three-dimensional coordinates, determining a target object and a real-time monitoring image where the target object is located in response to a positioning request, and determining the depth of the ground according to the two-dimensional coordinates of the target object in the real-time monitoring image, the internal parameter matrix and the external parameter matrix of the monitoring device and the determined ...