Road detection logic
    3.
    发明授权
    Road detection logic 有权
    道路检测逻辑

    公开(公告)号:US09508257B2

    公开(公告)日:2016-11-29

    申请号:US14648990

    申请日:2014-02-07

    IPC分类号: G08G1/01 G09B29/10 G01C21/32

    摘要: An analyzer of the invention adequately analyzes a change in road network by using probe information generated with driving of a vehicle. This analyzer determines a traffic amount of vehicles passing through a specified section included in the road network from a plurality of the probe information accumulated over a predetermined period. The analyzer also determines a discontinuity rate, which is a rate of incidents that vehicle locations are discontinuous in the specified section, from the plurality of probe information accumulated over the predetermined period. The analyzer detects a change in the road network, based on a degree of change between traffic amounts in two different periods with respect to the specified section included in the road network and a degree of change between discontinuity rates in the two different periods. The detected change in the road network can be used for survey of the road network.

    摘要翻译: 本发明的分析装置通过使用车辆驾驶产生的探测信息来充分地分析道路网络的变化。 该分析器根据在预定时间段内累积的多个探测信息来确定通过包括在道路网络中的指定部分的车辆的交通量。 分析仪还根据在预定时段内累积的多个探测信息,确定不规则率,其是车辆位置在指定区间中不连续的事故率。 分析器基于道路网络中包含的指定部分的两个不同周期中的交通量之间的变化程度和两个不同周期中的不连续率之间的变化程度,来检测道路网络的变化。 检测到的道路网变化可用于道路网的调查。

    Navigation device and navigation method

    公开(公告)号:US10302437B2

    公开(公告)日:2019-05-28

    申请号:US15070701

    申请日:2016-03-15

    IPC分类号: G01C21/30 G01C21/32

    摘要: In a case where a specific position is designated in first road network data, first link group identification data containing a link, on which the specific position is present, is acquired, and a corresponding link group, which is a link group indicated by second link group identification data, corresponding to the first link group identification data, is extracted from second road network data. A corresponding position on a link contained in the corresponding link group, which corresponds to the specific position, is determined, and second information is acquired from second map data based on the corresponding position.