- Patent Number:
12174,023
- Appl. No:
16/697890
- Application Filed:
November 27, 2019
- نبذة مختصرة :
A system, a method, and a computer program product for validating a road sign are provided. The method comprises determining a transition location associated with the road sign using map data. The transition location is at least one of a map region start location or a map region end location. The method further comprises determining road sign data associated with the road sign using a sensor data cluster. The method further comprises determining a validity of the road sign based on the road sign data and the transition location.
- Inventors:
HERE Global B.V. (Eindhoven, NL)
- Assignees:
HERE Global B.V. (Eindhoven, NL)
- Claim:
1. A system for validating a road sign, comprising: at least one non-transitory memory configured to store computer program code instructions; and at least one processor configured to execute the computer program code instructions to: determine a transition location associated with the road sign using map data, wherein the transition location is at least one of a map region start location or a map region end location; determine road sign data associated with the road sign using a sensor data cluster; and determine a validity of the road sign based on the road sign data and the transition location, wherein the map data is used to determine if, at the transition location, there is a transition from a non-built up area link to a built up area link or from a built up area link to a non-built up area link.
- Claim:
2. The system of claim 1 , wherein the road sign data comprises a road sign type, wherein the road sign type comprises one of a region start sign or a region end sign.
- Claim:
3. The system of claim 2 , wherein to determine the validity of the road sign, the at least one processor is further configured to: determine if the road sign type is region start sign from sensor data cluster; and determine the validity of the road sign as an acceptable road sign if it is determined that at the transition location there is a transition from a non-built up area link to a built up area link.
- Claim:
4. The system of claim 2 , wherein to determine the validity of the road sign, the at least one processor is further configured to: determine if the road sign type is region start sign from sensor data cluster; and reject the road sign as an invalid road sign if it is determined that at the transition location there is not a transition from a non-built up area link to a built up area link.
- Claim:
5. The system of claim 2 , wherein to determine the validity of the road sign, the at least one processor is further configured to: determine if the road sign type is region end sign from sensor data cluster; and validate the road sign as an acceptable road sign if it is determined that at the transition location there is a transition from a built up area link to a non-built up area link.
- Claim:
6. The system of claim 2 , wherein to determine the validity of the road sign, the at least one processor is further configured to: determine if the road sign type is region end sign from sensor data cluster; and reject the road sign as an invalid road sign if it is determined that at the transition location there is not a transition from a built up area link to a non-built up area link.
- Claim:
7. The system of claim 1 , wherein to determine the transition location associated with the road sign using map data, the at least one processor is further configured to: determine at least one upstream link and at least one downstream link associated with a connecting location of the map data; and determine if the connecting location is the transition location based on a comparison of the at least one upstream link with a built up area link and a non-built up area link and the at least one downstream link with the built up area link and the non-built up area link.
- Claim:
8. The system of claim 7 , wherein to determine the transition location associated with the road sign using map data, the at least one processor is further configured to classify the transition location as the map region start location if the at least one upstream link is the non-built up area link and the at least one downstream link is the built up area link.
- Claim:
9. The system of claim 1 , wherein the at least one processor is further configured to update the map data based on the validity of the road sign.
- Claim:
10. The system of claim 9 , wherein to update the map data, the at least one processor is further configured to update the transition location.
- Claim:
11. The system of claim 1 , wherein the sensor data cluster comprises a cluster of road sign observations based on a predefined distance criteria, wherein the predefined distance criteria comprises a configurable distance threshold, wherein the configurable distance threshold comprises a numerical value specifying a distance of separation between a road sign location and the transition location.
- Claim:
12. A method for validating a road sign, the method comprising: determining a transition location associated with the road sign using map data, wherein the transition location is at least one of a map region start location or a map region end location; determining road sign data associated with the road sign using a sensor data cluster; and determining, by at least one processor, a validity of the road sign based on the road sign data and the transition location, wherein the map data is used to determine if, at the transition location, there is a transition from a non-built up area link to a built up area link or from a built up area link to a non-built up area link.
- Claim:
13. The method of claim 12 , wherein the road sign data comprises a road sign type, wherein the road sign type comprises one of a region start sign or a region end sign.
- Claim:
14. The method of claim 13 , wherein validating the road sign further comprises: determining if the road sign type is region start sign from sensor data cluster; and validating the road sign as an acceptable road sign if it is determined that at the transition location there is a transition from a non-built up area link to a built up area link.
- Claim:
15. The method of claim 13 , wherein validating the road sign further comprises: determining if the road sign type is region start sign from sensor data cluster; and rejecting the road sign as an invalid road sign if it is determined that at the transition location there is not a transition from a non-built up area link to a built up area link.
- Claim:
16. The method of claim 12 , wherein determining the transition data associated with the road sign further comprises: determining at least one upstream link and at least one downstream link associated with a connecting location of the map data; and determining if the connecting location is the transition location associated with the transition data based on a comparison of the at least one upstream link with a built up area link and a non-built up area link and the at least one downstream link with the built up area link and the non-built up area link.
- Claim:
17. The method of claim 16 , wherein determining the transition location associated with the road sign further comprises classifying the transition location as the map region end location if the at least one upstream link is the built up area link and the at least one downstream link is the non-built up area link.
- Claim:
18. The method of claim 12 , further comprising updating the map data based on the validity of the road sign.
- Claim:
19. The method of claim 18 , wherein updating the map data further comprises updating the transition location.
- Claim:
20. A method for validating a road sign associated with a map region, comprising: obtaining sensor data associated with the road sign; determining one of a region start indicator or a region end indicator, based on the sensor data; determining link data associated with the road sign, wherein the link data specifies a transition from a non-built up area link to a built up area link or from a built up area link to a non-built up area link; and determining a validity of the road sign, based on the one of the region start indicator or a region end indicator and the link data associated with the road sign.
- Patent References Cited:
6560529 May 2003 Janssen
8694255 April 2014 Mehr et al.
9500491 November 2016 Kratzsch et al.
2010/0274482 October 2010 Feng
2011/0098912 April 2011 Baselau
2015/0211867 July 2015 Nagy
2015/0345974 December 2015 Takahashi
2016/0034769 February 2016 Singh
2019/0195648 June 2019 Pogel
- Other References:
Zolotovitski et al., “Analysis of Potential to Improve Maps Using Car Probe Data”, Proceedings of the 10th ACM SIGSPATIAL Workshop on Computational Transportation Science, Nov. 7, 2017, 6 pages. cited by applicant
- Assistant Examiner:
Pall, Charles
- Primary Examiner:
Ortiz, Angela Y
- Attorney, Agent or Firm:
DITTHAVONG, STEINER & MLOTKOWSKI
- الرقم المعرف:
edspgr.12174023
Processing Request
No Comments.