Track information generating device, track information generating method, and computer-readable storage medium
First Claim
1. A track information generating device comprising:
- a self-contained navigation track acquisition unit that acquires a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle;
a matching track acquisition unit that acquires a matching track that is a track of the vehicle indicated by a plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling, and that acquires a degree of reliability of the matching track;
a GPS track acquisition unit that acquires a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; and
a self-contained navigation information correcting unit that;
compares the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; and
sets one of the GPS track and the matching track, having a higher degree of reliability, as a correction target track to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track.
1 Assignment
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Accused Products
Abstract
Track information generating devices, methods, and programs acquire a self-contained navigation track of a vehicle indicated by time-series pieces of self-contained navigation information, acquire a matching track of the vehicle indicated by time-series pieces of information determined through a map matching process is determined as a road the vehicle is traveling, and acquire a degree of reliability of the matching track. The devices, methods, and programs acquire a GPS track that is a track of the vehicle indicated by time-series pieces of GPS information, acquire a degree of reliability of the GPS track, and set the one of the GPS track and the matching track having a higher degree of reliability as a correction target track to correct the self-contained navigation information so as to reduce a difference between the self-contained navigation track and the correction target track.
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Citations
20 Claims
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1. A track information generating device comprising:
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a self-contained navigation track acquisition unit that acquires a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle; a matching track acquisition unit that acquires a matching track that is a track of the vehicle indicated by a plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling, and that acquires a degree of reliability of the matching track; a GPS track acquisition unit that acquires a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; and a self-contained navigation information correcting unit that; compares the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; and sets one of the GPS track and the matching track, having a higher degree of reliability, as a correction target track to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A track information generating device comprising:
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a self-contained navigation track acquisition unit that acquires a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle; a matching track acquisition unit that acquires a matching track that is a track of the vehicle indicated by a plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling; a GPS track acquisition unit that acquires a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; and a self-contained navigation information correcting unit that; compares the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; and sets the GPS track as a correction target track when the degree of reliability of the GPS track exceeds a predetermined reference to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track, and that sets the matching track as a correction target track when the degree of reliability of the GPS track is lower than the predetermined reference to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A track information generating method comprising:
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acquiring, with a processor, a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle; acquiring, with the processor, a matching track that is a track of the vehicle indicated by a plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling; acquiring, with the processor, a degree of reliability of the matching track; acquiring, with the processor, a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; comparing, with the processor, the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; and setting, with the processor, one of the GPS track and the matching track, having a higher degree of reliability, as a correction target track to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track. - View Dependent Claims (14)
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15. A track information generating method comprising:
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acquiring, with a processor, a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle; acquiring, with the processor, a matching track that is a track of the vehicle indicated by a plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling; acquiring, with the processor, a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; comparing, with the processor, the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; setting, with the processor, the GPS track as a correction target track when the degree of reliability of the GPS track exceeds a predetermined reference to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track; and setting, with the processor, the matching track as a correction target track when the degree of reliability of the GPS track is lower than the predetermined reference to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track. - View Dependent Claims (16)
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17. A non-transitory computer-readable storage medium that stores computer-executable instructions for performing a track information generating method comprising:
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acquiring, with a processor, a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle; acquiring, with the processor, a matching track that is a track of the vehicle indicated by a plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling; acquiring a degree of reliability of the matching track; acquiring, with the processor, a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; comparing the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; and setting one of the GPS track and the matching track, having a higher degree of reliability, as a correction target track to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track. - View Dependent Claims (18)
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19. A non-transitory computer-readable storage medium that stores computer-executable instructions for performing a track information generating method comprising:
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acquiring, with a processor, a self-contained navigation track that is a track of a vehicle indicated by a plurality of time-series pieces of self-contained navigation information obtained from a speed sensor and a direction sensor on the vehicle; acquiring, with the processor, a matching track that is a track of the vehicle indicated by plurality of time-series pieces of information determined through a map matching process in which a road, of which a shape indicated by map information most coincides with the self-contained navigation track, is determined as a road on which the vehicle is traveling; acquiring, with the processor, a GPS track that is a track of the vehicle indicated by a plurality of time-series pieces of GPS information obtained from a GPS sensor on the vehicle; comparing the self-contained navigation track with the GPS track to determine a degree of reliability of the GPS track by increasing the degree of reliability of the GPS track as a degree of coincidence between a shape of the self-contained navigation track and a shape of the GPS track increases; setting the GPS track as a correction target track when the degree of reliability of the GPS track exceeds a predetermined reference to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track; and setting the matching track as a correction target track when the degree of reliability of the GPS track is lower than the predetermined reference to correct the self-contained navigation information by reducing a difference between the self-contained navigation track and the correction target track. - View Dependent Claims (20)
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Specification