establishing parent and child types between a first bounding box and a second bounding box, wherein the first bounding box is determined as the child type, the second bounding box is determined as the parent type, and the first bounding box and the second bounding box are three-dimensional bounding boxes;

determining a support of the target object as a reference object for adjustment of the target object, according to the parent and child types, wherein the target object and the support pertain to road facilities, the target object includes a sign, an indicator board, or a speed limiting board, and the support includes a gantry, a cross rod, or a vertical rod;

acquiring the first bounding box corresponding to the target object;

acquiring the second bounding box corresponding to the support;

obtaining an association relationship for the adjustment of the target object, according to a spatial position where the first and second bounding boxes are located; and

moving, according to the association relationship, the target object towards the support, to obtain a third bounding box corresponding to the adjusted target object,

wherein the third bounding box and the second bounding box appear to fit each other, which represents that the third bounding box and the second bounding box do not intersect with each other and there is no hollow or gap between the third bounding box and the second bounding box.