Chinese road spectrum database-based typical pavement extraction and synthesis method
A synthesis method and database technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problems of lack of methods for extracting and synthesizing typical road surfaces, the road surface should not be too long, and the characteristics of the road surface cannot be truly represented.
Active Publication Date: 2011-04-27
CHINA AUTOMOTIVE ENG RES INST
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[0004] In the current vehicle engineering, most of the test simulations use only a very local test road surface in a certain place, or directly simulate a road surface in the computer. These road surface data cannot really represent the characteristics of the road surface in this area. Therefore, there is a great need for a typical road surface in engineering. This road surface cannot be too long but has various road surface characteristics of the roads in this area, that is, it is typical and can represent the road surface characteristics of this area. However, there is still a lack of a road surface in the prior art. A method based on typical road surface extraction and synthesis
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[0036] Embodiments of the present invention and their working principles will be described in detail below with reference to the accompanying drawings.
[0037] A typical road surface extraction and synthesis method based on the Chinese road spectrum database, including the following steps:
[0038] Step 1 (S1): Extraction of pavement feature parameters
[0039] Extract N indicators of M sample road sections from the Chinese road spectrum database as typical road surface extraction
[0040] Basic parameters, both M and N are positive integers;
[0041] Such as figure 1 Shown, the structure of the Chinese Road Spectrum Database, showing the coverage and hierarchy of the database
[0042] In the specific implementation process, a large number of test data in the database are analyzed through the query interface of the Chinese road spectrum database. Here, N is set to 10, that is, 10 indicators are extracted as the basic parameters of the typical road surface extraction.
[0...
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The invention discloses a Chinese road spectrum database-based typical pavement extraction and synthesis method, which is characterized by comprising the following steps of: extracting pavement characteristic parameters; calculating a normalized area by using a radar chart analysis method; extracting an optimized pavement sample by using a mean target analysis method and extracting an optimized pavement sample again by using a standard deviation target analysis method; synthesizing a representative typical road, and the like. The invention has the advantages that: due to a typical pavement extraction and synthesis algorithm, by extracting and statistically analyzing the characteristic parameters of mass pavement test data in a road spectrum database, a representative highly-concentrated typical road is synthesized under the matching of a radar chart analysis tool. The typical road can be used for performance test of various test stands in automotive engineering, and also can be used for a variety of virtual simulation software to form a representative three-dimensional digital road with regional characteristics.
Description
technical field [0001] The invention relates to the extraction and synthesis technology of road data, in particular, it is a typical road surface extraction and synthesis method based on the Chinese road spectrum database. Background technique [0002] With the rapid development of the automobile industry, my country has become a major producer of the world's automobile industry. It has gone through the stages of imitation, technology introduction and processing and production, and has entered a new stage of independent research and development and independent innovation. In the field of automotive engineering in the independent research and development stage, road data is the main external excitation source for vehicles. Whether it is various indoor test bench performance tests or virtual simulation analysis in the computer, it is inseparable from the support of basic road data. [0003] The China Road Spectrum Database is the result of statistical measurement of typical ro...
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IPC IPC(8): G06T17/05G06K9/52G06T7/00
Inventor 段虎明石锋马颖张开斌谢飞
Owner CHINA AUTOMOTIVE ENG RES INST