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Difference analysis method and difference analysis device for electronic maps

A technology of difference analysis and electronic map, which is applied in the direction of road network navigator, etc., to achieve the effect of simple method and fast speed

Active Publication Date: 2011-07-20
NAVINFO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, after the electronic map data is updated, there is a lack of a simple, fast and reliable way to analyze the difference before and after the electronic map update, and obtain the difference analysis data required for incremental update

Method used

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  • Difference analysis method and difference analysis device for electronic maps
  • Difference analysis method and difference analysis device for electronic maps
  • Difference analysis method and difference analysis device for electronic maps

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Embodiment Construction

[0055] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0056] figure 1 It is a schematic flowchart of a method for analyzing differences in an electronic map according to an embodiment of the present invention. The difference analysis method in the embodiment of the present invention is used to perform difference analysis on the first map and the second map. like figure 1 , the differential analysis method of this embodiment comprises the following steps:

[0057] Step 101: Obtain the map element data of the first map and the map element data of the second map, the map element data include: a differential identifier corresponding to a predetermined differential element, and the differential identifier is created when the corresponding differential element is created setting and uniquely...

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Abstract

The invention provides a difference analysis method and a difference analysis device for electronic maps. The method comprises the following steps of: acquiring map element data of a first map and map element data of a second map, wherein the map element data comprises a difference identifier corresponding to a predetermined difference element, and the difference identifier is set when the corresponding difference element is established, and uniquely identifies the existence of the difference identifier when the corresponding difference element exists; comparing the difference identifier in the first map and the difference identifier in the second map to obtain a first comparison result; and determining a difference comparison result of the first map and the second map according to the first comparison result, wherein the difference comparison result comprises a newly added difference element in the second map and / or a difference element deleted from the first map. The method is simple and reliable, and the difference comparison result can be quickly provided for a user.

Description

technical field [0001] The invention relates to the field of updating electronic map data, in particular to an electronic map difference analysis method and a difference analysis device. Background technique [0002] With the rapid development of urban construction and the continuous deepening of the application of navigation electronic maps, the traditional navigation data update mode has been difficult to meet the requirements of the development of navigation applications. It has become one of the core technology trends of the industry to develop advanced incremental update technology, establish an incremental update technology system, and realize rapid change identification, collection, processing, and release of information. In the prior art, after the electronic map data is updated, there is a lack of a simple, fast and reliable way to analyze the difference before and after the electronic map is updated, and to obtain the difference analysis data required for the incre...

Claims

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Application Information

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IPC IPC(8): G01C21/30G01C21/26
Inventor 马常杰陈丹宋慧星徐晋晖
Owner NAVINFO
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