Method and apparatus for determining trajectory paths on a transportation structure
First Claim
1. A method for determining trajectory paths across a transportation structure of a road network, the method comprising:
- determining a location of the transportation structure and a plurality of predetermined waypoints associated with the transportation structure;
determining at least one data selection area including the transportation structure and the plurality of predetermined waypoints,wherein the determined data selection area is configured to exclude a second transportation structure,wherein the transportation structure is an interchange,wherein the interchange is characterized as a junction involving at least two roads and one or more ramps,wherein the interchange is further characterized as including grade separation configured to permit at least one traffic stream on at least one road of the at least two roads to pass through the interchange without interfering with another traffic stream on another road of the at least two roads,wherein the transportation structure is further characterized as including the plurality of predetermined waypoints representing points of entry and/or exit for traffic to enter into the transportation structure and/or to exit from the transportation structure,wherein the transportation structure is further characterized by having a plurality of trajectory paths for traversing the transportation structure and passing through one pair of waypoints while traveling in one direction through the pair of waypoints;
determining probe data collected within the data selection area;
determining first and second waypoints of the plurality of predetermined waypoints connecting the at least two roads and the one or more ramps including determining at least one first waypoint and at least one second waypoint of the transportation structure,wherein the at least one first waypoint of the plurality of predetermined waypoints represents at least one entry point to the transportation structure,wherein the at least one second waypoint of the plurality of predetermined waypoints represents at least one exit point from the transportation structure,wherein the at least one first waypoint and the at least one second waypoint are characterized by sharing a plurality of trajectory paths for traversing the transportation structure without interfering with another traffic stream after entering the transportation structure via the at least one first waypoint;
designating, based on part of the probe data and the determined first and second waypoints, a plurality of location traces spanning the plurality of trajectory paths across a plurality of the first waypoints and a plurality of the second waypoints as a plurality of baseline paths;
classifying a remaining portion of the probe data not designated as spanning both a first waypoint and a second waypoint,wherein the classifying is based, at least in part, on a threshold distance calculation, a heading comparison or some combination thereof; and
designating the plurality of baseline paths as a proxy for map data representing the transportation structure.
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Abstract
An approach is provided for determining trajectory paths of a road network. A location platform determines at least one first waypoint and at least one second waypoint of at least one road structure. The at least one first waypoint represents at least one entry point to the at least one road structure, and wherein the at least one second waypoint represents at least one exit point from the at least one road structure. The location platform causes, at least in part, a designation of at least one location trace spanning the at least one first waypoint and the at least one second waypoint as at least one baseline path. The location platform then causes, at least in part, a classification of one or more other location traces with respect to the at least one baseline path.
11 Citations
17 Claims
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1. A method for determining trajectory paths across a transportation structure of a road network, the method comprising:
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determining a location of the transportation structure and a plurality of predetermined waypoints associated with the transportation structure; determining at least one data selection area including the transportation structure and the plurality of predetermined waypoints, wherein the determined data selection area is configured to exclude a second transportation structure, wherein the transportation structure is an interchange, wherein the interchange is characterized as a junction involving at least two roads and one or more ramps, wherein the interchange is further characterized as including grade separation configured to permit at least one traffic stream on at least one road of the at least two roads to pass through the interchange without interfering with another traffic stream on another road of the at least two roads, wherein the transportation structure is further characterized as including the plurality of predetermined waypoints representing points of entry and/or exit for traffic to enter into the transportation structure and/or to exit from the transportation structure, wherein the transportation structure is further characterized by having a plurality of trajectory paths for traversing the transportation structure and passing through one pair of waypoints while traveling in one direction through the pair of waypoints; determining probe data collected within the data selection area; determining first and second waypoints of the plurality of predetermined waypoints connecting the at least two roads and the one or more ramps including determining at least one first waypoint and at least one second waypoint of the transportation structure, wherein the at least one first waypoint of the plurality of predetermined waypoints represents at least one entry point to the transportation structure, wherein the at least one second waypoint of the plurality of predetermined waypoints represents at least one exit point from the transportation structure, wherein the at least one first waypoint and the at least one second waypoint are characterized by sharing a plurality of trajectory paths for traversing the transportation structure without interfering with another traffic stream after entering the transportation structure via the at least one first waypoint; designating, based on part of the probe data and the determined first and second waypoints, a plurality of location traces spanning the plurality of trajectory paths across a plurality of the first waypoints and a plurality of the second waypoints as a plurality of baseline paths; classifying a remaining portion of the probe data not designated as spanning both a first waypoint and a second waypoint, wherein the classifying is based, at least in part, on a threshold distance calculation, a heading comparison or some combination thereof; and designating the plurality of baseline paths as a proxy for map data representing the transportation structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for determining trajectory paths across a transportation structure of a road network, the apparatus comprising:
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at least one processor; and at least one memory including computer program code for one or more programs, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following; determine a location of the transportation structure and a plurality of predetermined waypoints associated with the transportation structure; determine at least one data selection area including the transportation structure and the plurality of predetermined waypoints, wherein the determined data selection area is configured to exclude a second transportation structure, wherein the transportation structure is an interchange, wherein the interchange is characterized as a junction involving at least two roads and one or more ramps, wherein the interchange is further characterized as including grade separation configured to permit at least one traffic stream on at least one road of the at least two roads to pass through the interchange without interfering with another traffic stream on another road of the at least two roads, wherein the transportation structure is further characterized as including a plurality of predetermined waypoints representing points of entry and/or exit for traffic to enter into the transportation structure and/or to exit from the transportation structure, wherein the transportation structure is further characterized by having a plurality of trajectory paths for traversing the transportation structure and passing through one pair of waypoints while traveling in one direction through the pair of waypoints, determine probe data collected within the data selection area, determine first and second waypoints of the plurality of predetermined waypoints connecting the transportation structure with the at least two roads and the one or more ramps including determining at least one first waypoint and at least one second waypoint of the transportation structure, wherein the at least one first waypoint of the plurality of predetermined waypoints represents at least one entry point to the transportation structure, wherein the at least one second waypoint of the plurality of predetermined waypoints represents at least one exit point from the transportation structure, wherein the at least one first waypoint and the at least one second waypoint are characterized by sharing a plurality of trajectory paths for traversing the transportation structure without interfering with another traffic stream after entering the transportation structure via the at least one first waypoint; designate, based on part of the probe data and the determined first and second waypoints, a plurality of location traces spanning the plurality of trajectory paths across a plurality of the first waypoints and a plurality of the second waypoints as a plurality of baseline paths; classify a remaining portion of the probe data not designated as spanning both a first waypoint and a second waypoint, wherein the classifying is based, at least in part, on a threshold distance calculation, a heading comparison or some combination thereof; and designate the plurality of baseline paths as a proxy for map data representing the transportation structure. - View Dependent Claims (11, 12, 13, 14)
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15. A non-transitory computer-readable storage medium carrying one or more sequences of one or more instructions which, when executed by one or more processors, cause an apparatus to at least perform the following steps for determining trajectory paths across a transportation structure of a road network:
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determining a location of the transportation structure and a plurality of predetermined waypoints associated with the transportation structure; determining at least one data selection area including the transportation structure and the plurality of predetermined waypoints, wherein the determined data selection area is configured to exclude a second transportation structure, wherein the transportation structure is an interchange, wherein the interchange is characterized as a junction involving at least two roads and one or more ramps, wherein the interchange is further characterized as including grade separation configured to permit at least one traffic stream on at least one road of the at least two roads to pass through the interchange without interfering with another traffic stream on another road of the at least two roads, wherein the transportation structure is further characterized as including a plurality of predetermined waypoints representing points of entry and/or exit for traffic to enter into the transportation structure and/or to exit from the transportation structure, wherein the transportation structure is further characterized by having a plurality of trajectory paths for traversing the transportation structure without interfering with another traffic stream and passing through one pair of waypoints while traveling in one direction through the pair of waypoints, determining probe data collected within the data selection area, determining first and second waypoints of the plurality of predetermined waypoints connecting the at least two roads and the one or more ramps including determining at least one first waypoint and at least one second waypoint of the transportation structure, wherein the at least one first waypoint of the plurality of predetermined waypoints represents at least one entry point to the transportation structure, wherein the at least one second waypoint of the plurality of predetermined waypoints represents at least one exit point from the transportation structure, wherein the at least one first waypoint and the at least one second waypoint are characterized by sharing a plurality of trajectory paths for traversing the transportation structure after entering the transportation structure via the at least one first waypoint; designating, based on part of the probe data and the determined first and second waypoints, a plurality of location traces spanning the plurality of trajectory paths across a plurality of the first waypoints and a plurality of the second waypoints as a plurality of baseline paths; classifying a remaining portion of the probe data not designated as spanning both a first waypoint and a second waypoint, wherein the classifying is based, at least in part, on a threshold distance calculation, a heading comparison or some combination thereof; and designating the plurality of baseline paths as a proxy for map data representing the transportation structure. - View Dependent Claims (16, 17)
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Specification