Abstract: A method is described for locating a destination in a digital map database using a query. If the query does not find the destination, the method queries a second, more recently updated, database for the destination. If a destination is found in second database, then the location of the destination that was found is used to find a destination in the original database that is nearby to the location of the destination found in second database.
Abstract: In one embodiment of the present invention, a method of and apparatus for determining inaccurate GPS samples in a set of GPS samples is disclosed, according to the following actions: a) obtaining GPS samples as taken by a global positioning system on board a vehicle when traveling along a trajectory; b) obtaining a first estimation of the trajectory based on the GPS samples; c) obtaining a second estimation of the trajectory at least based on measurements made by an inertial measurement unit on board vehicle when traveling along the trajectory; d) comparing the first and second estimations; e) establishing locations where the first estimation shows a variation compared with the second estimation above a predetermined threshold; f) if no such locations can be established continue with action j), otherwise continue with action g); g) removing GPS samples associated with the locations of high variation as being inaccurate GPS samples, thus forming a set of remaining GPS samples; h) calculating the first estimati
Abstract: A method of detecting objects from terrestrial based mobile mapping data is disclosed, wherein the terrestrial based mobile mapping data has been captured by way of a terrestrial based mobile mapping vehicle driving on a road having a driving direction, the mobile mapping data including laser scanner data, source images obtained by at least one camera and position and orientation data of the vehicle, wherein the laser scanner data includes laser points, each laser point having associated position and orientation data, and each source image comprises associated position and orientation data.
Type:
Grant
Filed:
October 30, 2007
Date of Patent:
December 4, 2012
Assignee:
TomTom Global Content B.V.
Inventors:
Lukasz Piotr Taborowski, Rafal Jan Gliszczynski, Arkadiusz Wysocki, Marcin Michal Kmiecik