Method and apparatus for labeling road element, device, and storage medium

An apparatus for labeling a road element, comprising:

• at least one processor and at least one memory, the at least one memory storing a computer program, the computer program being loaded and executed by the at least one processor to implement:
• obtaining a sequence of road geometry line points of a first road in a three-dimensional map, the sequence of road geometry line points comprising a plurality of location points for drawing an outline of a road geometry of the first road;
• segmenting the first road based on the sequence of road geometry line points, to obtain a plurality of road segments of the first road, a road surface of a road segment being drawn as a plane, comprising:
• obtaining, for a first location point, a second location point, and a third location point that are sequentially arranged in the sequence of road geometry line points, a turning point detection result corresponding to the second location point, and a first boundary point and a second boundary point corresponding to the second location point, the first boundary point and the second boundary point being two intersection points between a first straight line and a road boundary of the first road, the first straight line being a line passing through the second location point and perpendicular to a connecting line between the first location point and the second location point, and the turning point detection result indicating whether the second location point is a turning point;
• and
• determining one or more road segments corresponding to the second location point in the first road based on the turning point detection result, comprising:
• in response to the second location point being a turning point, determining a curved road segment corresponding to the second location point, and determining a remaining plane obtained after the curved road segment is removed from a target plane as a straight road segment corresponding to the second location point;
• and
• determining, in response to that a target road element spans across a boundary line of two adjacent road segments in the first road, a joint point located on the boundary line, the joint point being configured as a label to divide the target road element as two sections that are respectively placed on the road surfaces of the two adjacent road segments.

A non-transitory computer-readable storage medium, storing a computer program, the computer program being loaded and executed by at least one processor to implement:

• obtaining a sequence of road geometry line points of a first road in a three-dimensional map, the sequence of road geometry line points comprising a plurality of location points for drawing an outline of a road geometry of the first road;
• segmenting the first road based on the sequence of road geometry line points, to obtain a plurality of road segments of the first road, a road surface of a road segment being drawn as a plane, comprising:
• obtaining, for a first location point, a second location point, and a third location point that are sequentially arranged in the sequence of road geometry line points, a turning point detection result corresponding to the second location point, and a first boundary point and a second boundary point corresponding to the second location point, the first boundary point and the second boundary point being two intersection points between a first straight line and a road boundary of the first road, the first straight line being a line passing through the second location point and perpendicular to a connecting line between the first location point and the second location point, and the turning point detection result indicating whether the second location point is a turning point;
• and
• determining one or more road segments corresponding to the second location point in the first road based on the turning point detection result, comprising:
• in response to the second location point being a turning point, determining a curved road segment corresponding to the second location point, and determining a remaining plane obtained after the curved road segment is removed from a target plane as a straight road segment corresponding to the second location point;
• and
• determining, in response to that a target road element spans across a boundary line of two adjacent road segments in the first road, a joint point located on the boundary line, the joint point being configured as a label to divide the target road element as two sections that are respectively placed on the road surfaces of the two adjacent road segments.