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Method and device for comparing map data

A map data and data comparison technology, applied in geographic information databases, structured data retrieval, special data processing applications, etc., can solve problems such as inability to accurately judge data differences, and achieve accurate and reliable comparison results.

Active Publication Date: 2022-05-13
WUHAN ZHONGHAITING DATA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a map data comparison method and device to solve the problem in the prior art that the difference between the two data cannot be accurately judged for the database containing the BLOB data type

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  • Method and device for comparing map data
  • Method and device for comparing map data

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodime...

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Abstract

In the method and device for comparing map data provided by the embodiments of the present invention, after reading the database file, the comparison is performed successively according to the order of the table name, the primary key value and the field value, and the data with differences is recorded in the comparison result. If the type is an ordinary data type (integer, floating-point, character), you can directly compare it; if the field is a BLOB type, you need to parse it in memory according to its original structure, and then analyze the parsed data by level Make a comparison and record the data with differences in the comparison result. Finally, output the comparison results to the comparison report. It can effectively compare the data of BLOB type, so as to analyze the specific differences of the data, and the comparison result is more accurate and reliable.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of electronic maps, in particular to a method and device for comparing map data. Background technique [0002] Currently, car stereos generally have navigation functions, and the accuracy of the map data used by navigation software is very important to drivers, so the test and verification of map data has become an important part. Before the release of a new map, the correctness of its data must be checked to prevent map data errors. The current method of detecting map data is to use map data query software to compare and check the data of the new map with the released map data. Testers need to use The map data query software opens the new map and the published map respectively, and the tester manually enters the location data of the selected area one by one in the two maps, and then the tester compares the differences between the two areas. If the data is consistent, the tester Fi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29
CPCG06F16/29
Inventor 陈飞鸿朱军严小坚罗跃军
Owner WUHAN ZHONGHAITING DATA TECH CO LTD