DEVICE AND METHOD FOR UPDATING CARTOGRAPHIC DATA

• US 20100305851A1
• Filed: 09/19/2008
• Published: 12/02/2010
• Est. Priority Date: 09/21/2007
• Status: Abandoned Application

• Current Assignee: Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forsching E.V.
• Original Assignee: Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forsching E.V.
• Inventors: Meyer, Steffen, Vaupel, Thorsten, Hupp, Juergen
• Application Number:
  US12/679,044
• Publication Number:
  US 20100305851A1
• Time in Patent Office: Days
• US Class Current: 701/208
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: G01C 21/3844 Data obtained from position sensors only, e.g. from inertial navigation
• CPC Class Codes: G01C 21/3852 Data derived from aerial or satellite images

Abstract

A device for updating cartographic data for a predetermined region, having a collector for collecting location information of a path covered in the predetermined region, an overlayer for overlaying the collected location information with the cartographic data for the predetermined region, a determiner for determining portions contradictory or missing in the cartographic data for the predetermined region on the basis of the overlaid collected location information, and an updater for updating the cartographic data in the missing or contradictory portions on the basis of the overlaid collected location information.

Claims

1-20. -20. (canceled)

21. A device for updating cartographic data for a predetermined region, comprising:

a collector for collecting location information of a path covered in the predetermined region, wherein the collector is formed to provide the collected location information with reliability information;

an overlayer for overlaying the collected location information with the cartographic data for the predetermined region, wherein the overlayer is formed to weight the location information that corresponds to the paths covered corresponding to selectable criteria, wherein each coordinate of the location information is weighted with a location unsharpness function for weighting to acquire a location probability statement in form of an unsharpness corridor corresponding to the path covered;

a determiner for determining portions contradictory or missing in the cartographic data for the predetermined region on the basis of the overlaid collected location information, wherein the determiner is formed to determine similar paths deviating from each other by a maximum tolerance range admissible from collected location information corresponding to a plurality of paths covered, and wherein contiguous regions are determined by overlaying unsharpness corridors corresponding to the similar paths and ensuing edge detection; and

an updater for updating the cartographic data in the missing or contradictory portions on the basis of the overlaid, collected location information.

22. The device according to claim 21, wherein the cartographic data are digital cartographic data.

23. The device according to claim 21, wherein the collector for collecting the location information is formed to collect the location information on the basis of radio signals.

24. The device according to claim 21, wherein the collector is coupled to a WLAN transceiver.

25. The device according to claim 21, wherein the location information comprises location coordinates, time information, and a transceiver tag.

26. The device according to claim 21, wherein the collector is formed to scale coordinates of the collected location information to the predetermined region.

27. The device according to claim 21, wherein the collector comprises a renderer for rendering the collected location information.

28. The device according to claim 27, wherein the renderer comprises a filter for smoothing the location information corresponding to the paths covered.

29. The device according to claim 21, wherein the collector comprises a digital memory to store and manage the collected location information.

30. The device according to claim 21, wherein the overlayer is formed to link the location information corresponding to the paths covered with the cartographic data, so that known portions in the cartographic data remain unconsidered in the location information corresponding to the paths covered.

31. The device according to claim 21, wherein the determiner is formed to extract path widths and/or path velocity information from the location information and perform classification of the collected location information on the basis thereof.

32. The device according to claim 21, wherein the determiner is formed to determine a passable and/or trafficable area in the predetermined region from the location information and surface condition information from the cartographic data.

33. The device according to claim 21, wherein the updater is formed to perform an update of the cartographic data only if an update criterion is met.

34. The device according to claim 33, wherein the update criterion comprises a minimum number of similar paths corresponding to path information not comprised in the cartographic data.

35. A method of updating cartographic data for a predetermined region, comprising:

collecting location information of a path covered in the predetermined region, wherein the collected location information is provided with reliability information;

overlaying the collected information with the cartographic data for the predetermined region, wherein the location information that corresponds to a path covered is weighted corresponding to the reliability information, wherein each coordinate of the location information is weighted with a location unsharpness function for weighting to acquire a location probability statement in form of an unsharpness corridor corresponding to the path covered;

determining portions contradictory or missing in the cartographic data for the predetermined region on the basis of the overlaid, collected location information, wherein similar paths deviating from each other by a maximum tolerance range admissible are determined from location information corresponding to a plurality of paths covered, and wherein contiguous regions are determined by overlaying unsharpness corridors corresponding to the similar paths and ensuing edge detection; and

updating the cartographic data in the missing or contradictory portions on the basis of the overlaid collected location information.

36. A tangible computer readable medium including a computer program for performing, when the computer program is executed on a computer and/or microcontroller, a method of updating cartographic data for a predetermined region, the method comprising:

collecting location information of a path covered in the predetermined region, wherein the collected location information is provided with reliability information;

overlaying the collected information with the cartographic data for the predetermined region, wherein the location information that corresponds to a path covered is weighted corresponding to the reliability information, wherein each coordinate of the location information is weighted with a location unsharpness function for weighting to acquire a location probability statement in form of an unsharpness corridor corresponding to the path covered;

determining portions contradictory or missing in the cartographic data for the predetermined region on the basis of the overlaid, collected location information, wherein similar paths deviating from each other by a maximum tolerance range admissible are determined from location information corresponding to a plurality of paths covered, and wherein contiguous regions are determined by overlaying unsharpness corridors corresponding to the similar paths and ensuing edge detection; and

updating the cartographic data in the missing or contradictory portions on the basis of the overlaid collected location information.