Patent ID: 11920937
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The non-transitory computer-readable medium according to claim 9, having the computer program instructions for causing the computer to execute the process by the processor so as to further perform steps of:
storing data indicating crosswalk coordinates of one or more crosswalks including a first crosswalk;
adding a plurality of interpolate points corresponding to interpolate coordinates between points of the plurality of end points and the plurality of corner points of the plurality of sidewalk centerlines into the sidewalk centerline data to form interpolate sidewalk centerline data;
detecting a third coordinate from the interpolate sidewalk centerline data, the third coordinate corresponding to a first intersection between a first straight line and a third sidewalk centerline of the plurality of sidewalk centerlines, the first straight line connecting between one of the crosswalk coordinates of the first crosswalk and the third sidewalk centerline that is located closest to the one of the crosswalk coordinates of the first crosswalk;
detecting a fourth coordinate from the interpolate sidewalk centerline data, the fourth coordinate corresponding to a second intersection between a second straight line and a fourth sidewalk centerline of the plurality of sidewalk centerlines different from the third sidewalk centerline, the second straight line connecting between the one of the crosswalk coordinates of the first crosswalk and the fourth sidewalk centerline that is located next closest to the one of the crosswalk coordinates of the first crosswalk; and
generating second link information of the link information for the third and fourth sidewalk centerlines across the first crosswalk for linking the detected third and fourth coordinates.