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Method and apparatus for combining a first partition from a first digital map database and a second partition from a second digital map database

A digital map and database technology, which is applied in geographic information databases, electronic digital data processing, digital data information retrieval, etc., can solve the problems of position offset (sometimes extremely significant, map discontinuity, etc.)

Inactive Publication Date: 2010-12-01
TELE ATLAS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When replacing the contents of partitions from different maps, positional shifts (sometimes dramatically) can occur, causing discontinuities in the combined map

Method used

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  • Method and apparatus for combining a first partition from a first digital map database and a second partition from a second digital map database
  • Method and apparatus for combining a first partition from a first digital map database and a second partition from a second digital map database
  • Method and apparatus for combining a first partition from a first digital map database and a second partition from a second digital map database

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Experimental program
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Embodiment Construction

[0039] figure 1 A flowchart showing an embodiment of the invention. The flowchart shows what actions can be performed for combining the contents of two digital map databases. In a first action 102, a first digital map database is segmented in partitions. Segmentation is preferably based on a predefined segmentation scheme. The segmentation scheme is in one embodiment based on a regular grid projected onto a coordinate reference system. For example, a digital map database can be partitioned into 1 km square regions. In another embodiment, the segmentation scheme is based on other characteristics present in the database, such as administrative, town boundaries, municipal boundaries, local authority boundaries, borough boundaries, county boundaries or any other suitable or arbitrary segmentation rules.

[0040] In action 104, the second digital map database is segmented into partitions. In this action, preferably the same segmentation scheme is used. This ensures that simil...

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PUM

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Abstract

The invention relates to a method of combining a first partition from a first digital map database and a second partition from a second digital map database, wherein the first and second digital map database being associated with a coordinate reference system, wherein the first and second partition having an interaction with each other in a common region in the first and second digital map database. The method comprising: - identifying a first group of objects in said first partition from said first digital map database, wherein each object comprises a position within said common region; - encoding the objects of the first group with a first group of location references; - decoding the first group of location references on the second partition from the second digital map database; - identifying the location references of the first group that could successfully decode on the second partition to determine topological connections; and, - combining the first partition with the second partition in the second map database in dependence of the location references associated with the topological connections.

Description

technical field [0001] The invention relates to a method of combining a first division from a first digital map database and a second division from a second digital map. The invention further relates to a device for combining a first partition from a first digital map database and a second partition from a second digital map database. Background technique [0002] Historically, maps were printed on paper or other non-modifiable, non-interactive media that did not allow any user to modify the information or the relationships between data points. Also, documents cannot be updated as new information becomes available, and databases in the modern sense of the world don't even exist, making the concept of updating them pointless. [0003] Before the computer age, when a map required revision, there were essentially two forms of reliance: 1) manually entering revisions on the paper copy; or 2) reprinting the map with revisions made to the original. Modifications may be correctio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/32G06F17/30G09B29/10
CPCG09B29/003G09B29/10G01C21/32G06F17/30241G06F16/29G01C21/387
Inventor 汉斯·乌尔里希·奥托
Owner TELE ATLAS BV