displaying a first color image corresponding to a first track point, wherein the first track point is a track point selected by a preset selection operation, the track point is a point on an actual road, and a color image corresponding to the track point is a color image captured at the track point;

obtaining, on basis of a first color sub-image and a depth image corresponding to the first track point, point cloud data corresponding to the first color sub-image, wherein the first color sub-image is a sub-image corresponding to an element to be added in the first color image, and the element to be added is an element to be added in a high-precision map for display;

extracting a three-dimensional bounding box corresponding to the point cloud data; generating, in the high-precision map, a newly-added three-dimensional element according to the three-dimensional bounding box corresponding to the first color sub-image;

determining a second color sub-image in a second color image corresponding to a second track point, wherein the second color sub-image is an image of the element to be added in the second color image, and the second track point is a track point adjacent to the first track point;

displaying, in the second color image, a two-dimensional polygon, wherein the two-dimensional polygon is obtained on basis of the three-dimensional bounding box corresponding to the first color sub-image according to the depth image; and

in response to receiving a confirmation instruction indicating that the second color sub-image does not match with the two-dimensional polygon, receiving, through a two-dimensional window, an edit instruction for editing the newly-added three-dimensional element in a three-dimensional window, and editing the newly-added three-dimensional element in the three-dimensional window according to the editing instruction received through the two-dimensional window.