公开(公告)号：US20230222905A1

公开(公告)日：2023-07-13

申请号：US17562532

申请日：2021-12-27

Applicant: HERE Global B.V.

Inventor： Jingwei XU ,  Yuxin GUAN ,  Bruce BERNHARDT ,  Weimin HUANG

IPC: G08G1/082 ,  G08G1/083 ,  G08G1/08 ,  G08G1/01 ,  G06V20/58 ,  G06V10/82

CPC classification number: G08G1/082 ,  G06V10/82 ,  G06V20/584 ,  G08G1/08 ,  G08G1/083 ,  G08G1/0112

Abstract: An approach is provided for traffic Signal Phase and Timing (SPaT) verification using sensor data and probe data. The approach involves, for instance, retrieving image data captured using a sensor of a vehicle traveling within proximity of a traffic light. The approach also involves processing the image data to identify at least one transition of the traffic light between one or more traffic light states. The approach further involves determining a transition time, a cycle time, or a combination thereof between the one or more traffic light states based on the identified at least one transition of the traffic light. The approach further involves performing a comparison of signal phase and timing (SPaT) data of the traffic light with the transition time, the cycle time, or a combination thereof and providing the comparison of the SPaT data as an output.

公开(公告)号：US20230120757A1

公开(公告)日：2023-04-20

申请号：US17381982

申请日：2021-07-21

Applicant: HERE GLOBAL B.V.

Inventor： Jingwei XU ,  Bruce BERNHARDT ,  Yuxin GUAN ,  Arnold SHEYNMAN

IPC: G01C21/36 ,  G06T7/33 ,  G01S17/89 ,  G08G1/0967 ,  G06V20/58 ,  G06V20/56

Abstract: A method, apparatus and computer program product are provided to estimate the location of a vehicle based at least in part upon two or more road signs that are depicted by one or more images captured by one or more image capture devices onboard the vehicle. By relying at least in part upon the two or more road signs, the location of the vehicle may be refined or otherwise estimated with enhanced accuracy, such as in instances in which there is an inability to maintain a line-of-sight with the satellites of a satellite positioning system or otherwise in instances in which the location estimated based upon reliance on satellite or radio signals is considered insufficient. As a result, the vehicle may be navigated in a more informed and reliable manner and the relationship of the vehicle to other vehicles may be determined with greater confidence.

公开(公告)号：US20210148719A1

公开(公告)日：2021-05-20

申请号：US16689777

申请日：2019-11-20

Applicant: HERE GLOBAL B.V.

Inventor： Jingwei XU ,  Bruce BERNHARDT ,  Yuxin GUAN ,  Arnold SHEYNMAN

IPC: G01C21/36 ,  G06K9/00 ,  G06T7/33 ,  G01S17/89 ,  G08G1/0967

Abstract: A method, apparatus and computer program product are provided to estimate the location of a vehicle based at least in part upon two or more road signs that are depicted by one or more images captured by one or more image capture devices onboard the vehicle. By relying at least in part upon the two or more road signs, the location of the vehicle may be refined or otherwise estimated with enhanced accuracy, such as in instances in which there is an inability to maintain a line-of-sight with the satellites of a satellite positioning system or otherwise in instances in which the location estimated based upon reliance on satellite or radio signals is considered insufficient. As a result, the vehicle may be navigated in a more informed and reliable manner and the relationship of the vehicle to other vehicles may be determined with greater confidence.

公开(公告)号：US20210104155A1

公开(公告)日：2021-04-08

申请号：US16593656

申请日：2019-10-04

Applicant: HERE GLOBAL B.V.

Inventor： Jingwei XU ,  Yuxin GUAN ,  Bruce BERNHARDT ,  Zongyi XUAN

IPC: G08G1/01 ,  B60W30/18 ,  B60W30/09 ,  G08G1/16 ,  B60W50/14 ,  G06K9/00

Abstract: An approach is provided for detecting lane-level dangerous slowdown events based on probe data and/or sensor data. The approach, for example, involves splitting probe data, sensor data, or a combination thereof into at least one vehicle trajectory, wherein the data is collected from one or more vehicles traveling on a road segment. For each vehicle trajectory of the at least one vehicle trajectory, the approach also involves processing said each vehicle trajectory to detect a slowdown event based on a speed reduction greater than a threshold reduction. The approach further involves classifying a slowdown event type of the slowdown event based on a final driving location, a final driving speed, or a combination thereof of the at least one vehicle trajectory. The approach further involves providing the slowdown event, the slowdown event type, or a combination thereof as an output for the road segment.