公开(公告)号：US20210285777A1

公开(公告)日：2021-09-16

申请号：US16815927

申请日：2020-03-11

Applicant: HERE Global B.V.

Inventor： Arash OSTADZADEH ,  Tessa BERRY ,  Matei STROILA ,  Aniket MITRA

IPC: G01C21/34 ,  G01C21/36

Abstract: An approach is provided for automatically identifying transportation transition regions (e.g., off-road pickup/drop-off locations) based on probe trajectory data. The approach involves, for example, determining a geographic area that encompasses a point of interest and an associated off-road region. The approach also involves retrieving probe trajectories that intersect the geographic area. The approach further involves segmenting the one or more probe trajectories into a plurality of segments that include on-road and/or off-road segments. The approach also involves processing the plurality of segments to identify one or more transition segments that include a transition involving an on-road segment of the one or more on-road segments or an off-road segment of the one or more off-road segments. The approach further involves clustering one or more probe points of the one or more transition segments to identify the transportation transition region. The approach further involves providing the transportation transition region as an output.

公开(公告)号：US20200158515A1

公开(公告)日：2020-05-21

申请号：US16196874

申请日：2018-11-20

Applicant: HERE GLOBAL B.V.

Inventor： Tessa BERRY ,  Onur DERIN ,  Matei STROILA ,  Aniket MITRA

IPC: G01C21/32 ,  G06F16/29 ,  H04W4/02

Abstract: An approach is provided for detecting stay points from probe data. The approach, for example, involves segmenting a probe trajectory into a first trajectory segment type (e.g., on-road), a second trajectory segment type (e.g., off-road), an unknown trajectory segment type, or a combination thereof. The approach also involves merging the unknown trajectory segment into either the first trajectory segment type or the second trajectory segment type based on a co-occurrence with the unknown trajectory segment. The approach further involves segmenting the first trajectory segment type into first sub-segments and the second trajectory segment type second sub-segments based on a minimum enclosing ball or any other bounding volume with a radius less than or equal to the distance threshold. The approach further involves processing each first sub-segment and each second sub-segment to determine stay points.