Method and apparatus for generating road network data of intersection area

A computer system, wherein the computer system comprises a processor and a memory, the memory is configured to store a computer program, and the processor is configured to read the computer program from the memory, and enable the computer system to perform operations for generating road network data of an intersection area, wherein the intersection area connects a plurality of roads, and the operations comprise:

• receiving, from one or more sensors, data of a road link of each of the plurality of roads, wherein the road link comprises an entry link and an exit link, and the data of the road link comprises coordinates of points forming the road link;
• calculating, based on the data of the road link of each of the plurality of roads, data of an intersection node in the intersection area and data of an intra-intersection link in the intersection area, wherein the data of the intersection node comprises coordinates of the intersection node, and the data of the intra-intersection link comprises coordinates of endpoints of the intra-intersection link, and wherein the calculating comprises:
• calculating coordinates of an intersection point of an extension line of the entry link of each road and an extension line of an exit link of a neighboring road, wherein the coordinates of the intersection point are the coordinates of the intersection node, and two intersection nodes in sequence are the endpoints of the intra-intersection link, wherein the calculating coordinates of an intersection point of an extension line of the entry link of each road and an extension line of an exit link of a neighboring road comprises making extension lines of the entry link and the exit link of each road in an intersection plane of the intersection area according to a course of the road, wherein the course of the road is a direction from a traffic center point of the road to a traffic center point in the intersection plane;
• and wherein
• the neighboring road is a road counterclockwise adjacent to the road, and a right-hand traffic rule is followed in a country or region in which the intersection area is located;
• or
• the neighboring road is a road clockwise adjacent to the road, and a left-hand traffic rule is followed in a country or region in which the intersection area is located;
• and
• performing automatic driving or intelligent assistant driving by using an electronic map that is generated based on the calculated data of the intersection node in the intersection area and the calculated data of the intra-intersection link in the intersection area.

A non-transitory computer-readable storage medium, wherein the non-transitory computer readable storage medium stores a computer program used to perform operations for generating road network data of an intersection area, wherein the intersection area connects a plurality of roads, and the operations comprise:

• receiving, from one or more sensors, data of a road link of each of the plurality of roads, wherein the road link comprises an entry link and an exit link, and the data of the road link comprises coordinates of points forming the road link;
• calculating, based on the data of the road link of each of the plurality of roads, data of an intersection node in the intersection area and data of an intra-intersection link in the intersection area, wherein the data of the intersection node comprises coordinates of the intersection node, and the data of the intra-intersection link comprises coordinates of endpoints of the intra-intersection link, and wherein the calculating comprises:
• calculating coordinates of an intersection point of an extension line of the entry link of each road and an extension line of an exit link of a neighboring road, wherein the coordinates of the intersection point are the coordinates of the intersection node, and two intersection nodes in sequence are the endpoints of the intra-intersection link, wherein the calculating coordinates of an intersection point of an extension line of the entry link of each road and an extension line of an exit link of a neighboring road comprises making extension lines of the entry link and the exit link of each road in an intersection plane of the intersection area according to a course of the road, wherein the course of the road is a direction from a traffic center point of the road to a traffic center point in the intersection plane;
• and wherein
• the neighboring road is a road counterclockwise adjacent to the road, and a right-hand traffic rule is followed in a country or region in which the intersection area is located;
• or
• the neighboring road is a road clockwise adjacent to the road, and a left-hand traffic rule is followed in a country or region in which the intersection area is located;
• and
• performing automatic driving or intelligent assistant driving by using an electronic map that is generated based on the calculated data of the intersection node in the intersection area and the calculated data of the intra-intersection link in the intersection area.