Method and system for the use of probe data from multiple vehicles to detect real world changes for use in updating a map
First Claim
1. A method, comprisingcollecting probe sensor data in an area containing roads and other drivable features;
- processing said probe sensor data in a first manner so as to create a geospatial map database comprising road segments, and in a second manner to derive a subset of data related to at least one segment within the geospatial map database and being indicative of an attribute thereof,statistically processing said subset data per road segment to determine one or more inferred attributes thereof,comparing said created geospatial map database, in particular the road segments identified therein and said inferred attributes thereof with a pre-existing geospatial map database containing road segments and attributes thereof, and where an inconsistency in the presence or absence of a road segment, or in its geometry or topology, or in any of its attributes, is identified,effecting a further action, being one of;
(a) Generating a change notification(b) Generating an alert(c) Generating a change request,the ultimate operation of such further action being the eventual update of the pre-existing geospatial map database such that the former attribute is replaced with at least one of the inferred attribute, and/or the insertion, deletion or correction, as far as geometry and topology is concerned, of the road segment.
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Accused Products
Abstract
At least one embodiment of a method is described including: (1) collecting probe sensor data in an area containing roads and other drivable features; (2) processing the probe sensor data in a first manner so as to create a geospatial map database including road segments, and in a second manner to derive a subset of data related to at least one segment within the geospatial map database and being indicative of an attribute thereof, (3) statistically processing the subset data per road segment to determine one or more inferred attributes thereof, (4) comparing the created geospatial map database, in particular the road segments identified therein and said inferred attributes thereof with a pre-existing geospatial map database containing road segments and attributes thereof, and where an inconsistency in the presence or absence of a road segment, or in its geometry or topology, or in any of its attributes, is identified, (5) effecting a further action, being one of: (a) Generating a change notification, (b) Generating an alert, (c) Generating a change request, the ultimate operation of such further action being the eventual update of the pre-existing geospatial map database such that the former attribute is replaced with the inferred attribute, and/or the insertion, deletion or correction, as far as geometry and topology is concerned, of the road segment. Alternative methods are also described.
117 Citations
18 Claims
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1. A method, comprising
collecting probe sensor data in an area containing roads and other drivable features; -
processing said probe sensor data in a first manner so as to create a geospatial map database comprising road segments, and in a second manner to derive a subset of data related to at least one segment within the geospatial map database and being indicative of an attribute thereof, statistically processing said subset data per road segment to determine one or more inferred attributes thereof, comparing said created geospatial map database, in particular the road segments identified therein and said inferred attributes thereof with a pre-existing geospatial map database containing road segments and attributes thereof, and where an inconsistency in the presence or absence of a road segment, or in its geometry or topology, or in any of its attributes, is identified, effecting a further action, being one of; (a) Generating a change notification (b) Generating an alert (c) Generating a change request, the ultimate operation of such further action being the eventual update of the pre-existing geospatial map database such that the former attribute is replaced with at least one of the inferred attribute, and/or the insertion, deletion or correction, as far as geometry and topology is concerned, of the road segment. - View Dependent Claims (2, 7, 8, 9, 10)
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3. A method, comprising
collecting probe sensor data in an area containing roads and other drivable features; -
communicating the probe sensor data to a collection facility, associating the probe sensor data with one or more road segments stored in a geospatial database, said road segments having one or more attributes; storing the road segment associated probe sensor data as a first data set independently of said geospatial database, repeating the above collecting, communicating, associating, and storing steps to provide second and optionally further data sets, comparing one data set with another to identify discrepancies betwixt data sets in terms of both road segments and their attributes, and for each discrepancy, effecting a further action, being one of; (a) Generating a change notification (b) Generating an alert (c) Generating a change request, the ultimate operation of such further action being the eventual update of the geospatial database as regards those road segments and attributes identified as a result of said comparison such that at least one of the following occurs; the former attribute is replaced with the inferred attribute, and, in the case of a road segment, the insertion, deletion or correction, as far as geometry and topology is concerned, thereof. - View Dependent Claims (4, 11, 12, 13, 14)
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5. A method, comprising
collecting probe sensor data in an area containing roads and other drivable features; -
processing said data so as to create a first geospatial map database comprising road segments, and from said probe sensor data, further deriving a separate body of data, related to one or more segments within the geospatial map database and being indicative of an attribute thereof, statistically processing said separate body of data per road segment to determine one or more inferred attributes thereof, combining the inferred attributes of road segments with the first geospatial map database to produce a first probe data-created geospatial map database, effecting a conflation between the first probe data-created geospatial map database thus created and a second, pre-existing master geospatial map database to give rise to an improved third master geospatial map database. - View Dependent Claims (15, 16)
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6. A method, comprising
collecting probe sensor data over a first time period in an area containing roads and other drivable features; -
processing said data so as to create a first geospatial map database comprising road segments, and also from said probe sensor data, further deriving a separate body of data, related to at least one segment within the geospatial map database and being indicative of an attribute thereof, statistically processing said separate body of data per road segment to determine one or more inferred attributes thereof, combining the inferred attributes of road segments with the first geospatial map database to produce a first probe data created geospatial map database, repeating the collecting, processing and combining steps above for probe data collected during a second time period to produce a second probe data generated geospatial map database, effecting a first comparison between the first and second geospatial map databases thus created to identify road segments, geometry, topology or attributes thereof that have changed between said first time period and said second time period, effecting a second comparison between only those identified road segments, geometry, topology or attributes thereof having changed over time and a pre-existing master database, and if said second comparison determines that the road segments, geometry, topology, or attributes thereof present in the master geospatial database are at odds with the identified road segments, geometry, topology or attributes thereof, effecting a further action, being one of; (a) Generating a change notification for said master database (b) Generating an alert (c) Generating a change request, the ultimate effect of such further action being the eventual update of the master geospatial database as regards at least one or more of those road segments, geometry, topology or attributes thereof being at odds with the identified road segments, geometry, topology or attributes thereof, such update being that the former are replaced with the latter, and/or in the case of an identified road segment being absent from the master geospatial database, the insertion thereof therein. - View Dependent Claims (17, 18)
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Specification