METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR CORRELATING PROBE DATA WITH MAP DATA

    公开(公告)号:US20170268887A1

    公开(公告)日:2017-09-21

    申请号:US15071839

    申请日:2016-03-16

    Inventor: Dongwook Jang

    CPC classification number: G01C21/30 G01C21/34 G01C21/3484

    Abstract: A method is provided for partitioning probe data into a plurality of subsets, map matching a portion of the subsets and establishing a route based on the map-matched subsets of probe data. A method is provided that includes: receiving probe data points from a plurality of probes, where an uncertainty of the measurement of the probe data is a first distance; partitioning the probe data from the plurality of probes into subsets of probe data, where the subsets are created by ensuring each subset has probe data points that are at least two times the first distance apart from one another; performing map-matching on each subset of probe data; and establishing a route for each subset based on the map-matching of each subset of probe data. Establishing a route for each subset may include determining a route according to at least one of the shortest, fastest, or simplest routes.

    Traffic Data Simulator
    23.
    发明申请
    Traffic Data Simulator 有权
    交通数据模拟器

    公开(公告)号:US20150127245A1

    公开(公告)日:2015-05-07

    申请号:US14174307

    申请日:2014-02-06

    Abstract: In one embodiment, traffic data that originates from sensors, cameras, or observations is analyzed. The traffic data is associated with multiple repeating time epochs or intervals. The traffic data is divided into clusters using a clustering technique. The traffic data may be collected on specific days such as holidays. The holiday traffic data may be divided data into clusters and a dominant traffic pattern cluster that represents a holiday classification is identified. The dominant traffic pattern cluster is stored in a traffic prediction model.

    Abstract translation: 在一个实施例中,分析了来自传感器,照相机或观测的交通数据。 交通数据与多个重复时间纪元或间隔相关联。 使用聚类技术将流量数据分成簇。 交通数据可能会在特定日期(如假日)收集。 假定交通数据可以将数据划分成群集,并且识别代表度假分类的主要交通模式群集。 主要流量模式集群存储在流量预测模型中。

    Updating maps and road status
    24.
    发明授权

    公开(公告)号:US10657804B2

    公开(公告)日:2020-05-19

    申请号:US15675188

    申请日:2017-08-11

    Abstract: Apparatus and methods are described for updating a geographic database based on road object probabilities. For example, an initial value set for an existence probability that a road object exists is determined. Observation data collected from sensors of vehicles are received. A total quantity of the observation data include a first quantity of vehicles that observed a presence of the road object and a second quantity of the vehicles observed an absence of the road object. A presence probability indicative of a likelihood that observation data accurately describe the road object and an absence probability indicative of a likelihood that observation data accurately describe the road object are calculated to determine an updated value for the existence probability. A geographic database is updated in response to the comparison of the updated value for the existence probability to a threshold confidence level.

    METHOD, APPARATUS AND COMPUTER PROGRAM PRODUCT FOR DETERMINING LIKELIHOOD OF A ROUTE

    公开(公告)号:US20190316925A1

    公开(公告)日:2019-10-17

    申请号:US15955341

    申请日:2018-04-17

    Abstract: Provided herein is a method for establishing the likelihood of a user traversing each of a plurality of paths through a network of roads. Methods may include: determining a location and direction of travel within a road network; determining a first road segment corresponding to the determined location and direction; determining a first set of available road segments at an end of the first road segment corresponding to the determined location in the direction of the determined direction of travel, where each available road segment of the first set has a first end proximate the end of the first road segment and a second end, between which the respective road segment extends; and calculating a probability for each available road segment of the first set of available road segments at the end of the first road segment.

    Method and apparatus for providing notifications based on ranking of road links

    公开(公告)号:US10173695B2

    公开(公告)日:2019-01-08

    申请号:US14552074

    申请日:2014-11-24

    Abstract: An approach is provided for prioritizing notification to one or more vehicles based on the ranking of one or more road links. The approach involves determining one or more road links that are associated with at least one curvature value greater than at least one curvature threshold value. The approach also involves determining humanized speed information and speed limit information for the one or more road links. The approach further involves processing and/or facilitating a processing of the at least one curvature value, the humanized speed information, and the speed limit information to determine danger level information for the one or more road links. The approach also involves causing, at least in part, a ranking of the one or more road links based, at least in part, on the danger level information. The approach further involves causing, at least in part, a prioritization of one or more notifications to one or more vehicles approaching or traveling the one or more road links based, at least in part, on the ranking of the one or more road links.

    Determining speed information
    28.
    发明授权

    公开(公告)号:US10131361B2

    公开(公告)日:2018-11-20

    申请号:US15164172

    申请日:2016-05-25

    Abstract: A method is presented, which comprises: obtaining or holding available at least one speed profile for at least one selected link of a travel network, wherein said at least one speed profile represents a plurality of speeds for a plurality of subsequent segments of said selected link; smoothing said at least one speed profile for said at least one selected link in a first smoothing step by: determining whether said at least one speed profile represents one or more speeds that are associated with an acceleration above a predetermined acceleration threshold or a deceleration below a predetermined deceleration threshold; for each speed that is determined to be associated with an acceleration above said acceleration threshold or a deceleration below said deceleration threshold, determining a respective adapted speed for replacing said respective speed at least partially based on speeds for one or more adjacent segments of said respective segment. Further presented are inter-alia corresponding apparatuses, a corresponding system and a corresponding computer program code.

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