Title:
障害横断情報を判断する方法
Document Type and Number:
Japanese Patent JP5649726
Kind Code:
B2
Abstract:
A method for determining barrier crossing information for convoyed objects (22) using historic trajectory data (28). Trajectories (28) having similar geographical and directional properties are bundled so that trajectory density can be measured as a function of position and time (s, t). Visual presentation of the trajectory information can be used to determine certain types of barrier crossing information useful in a digital map. Frequency analysis on a number of trajectory density time series may be performed to determine specific barrier crossing locations (26) through the detection of vehicle bursts. Such frequency analysis may also indicate barrier crossing times and schedules in the case of crossing patterns.
Inventors:
ベカルト， ティム
Application Number:
JP2013514558A
Publication Date:
January 07, 2015
Filing Date:
June 15, 2010
Export Citation:
Assignee:
トムトム ベルギー ネムローゼ フエンノートシャップＴｏｍＴｏｍ Ｂｅｌｇｉｕｍ Ｎ．Ｖ．
International Classes:
G01C21/30; G01C21/26; G08G1/137; G09B29/00; G09B29/10
Attorney, Agent or Firm:
Yasunari Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Hideji Kimura
Shimoyama 治
Shiro Takayanagi
Yasuhiro Otsuka
Hideji Kimura
Shimoyama 治