发明名称 |
METHOD FOR ADAPTIVELY CONSTRUCTING AND REVISING ROAD MAPS |
摘要 |
<p>A method for constructing and revising road maps in a vehicle map database using vehicle location signals to provide traffic flow information for recognized vehicle patterns from past vehicle travel. The method includes identifying vehicle travel segments as a series of exemplar points from the location signals. Exemplar points in each travel segment are eliminated to define the travel segment by a beginning exemplar point and an ending exemplar point. A potential ending exemplar point may be redefined if an average location of the exemplar points from a line connecting the beginning point and the potential ending point is outside of a threshold distance. The travel segments are stored in a database, where each stored travel segment includes a travel time. The method compares new vehicle travel segments to the stored vehicle travel segments to identify a match, and then revise the vehicle travel time for the stored travel segments.</p> |
申请公布号 |
WO2009032806(A3) |
申请公布日期 |
2009.05.14 |
申请号 |
WO2008US74986 |
申请日期 |
2008.09.02 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS, INC.;VAN BUER, DARREL, J. |
发明人 |
VAN BUER, DARREL, J. |
分类号 |
G01C21/20;B60R16/00 |
主分类号 |
G01C21/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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