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Key Techniques on the Framework of Mass Data Processing System

Author: TangJin
Tutor: ZhangLiYan
School: Nanjing University of Aeronautics and Astronautics
Course: Aviation Aerospace Manufacturing Engineering
Keywords: Triangular mesh Huge amounts of data Octree Mesh compression OpenGL
CLC: TP274.2
Type: Master's thesis
Year: 2006
Downloads: 720
Quote: 5
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Abstract


In reverse engineering , with the development of the measuring equipment , the huge amount of data that contains more details of the measured object to obtain it possible , and the direction of development of the high-precision measurement modeling . Measured triangle mesh data , however , is massive , often reach millions or even tens of millions of triangular facets , and intensive computer's memory and hard disk resources . For example, the measurement data of the aircraft take up hard disk space more than 100G . Such a large scale data are generally three-dimensional CAD software can not be efficient , which became a bottleneck of reverse engineering . To solve the above problem , this paper studied the key technologies for mass data processing system , designed by one million the number of triangles in a triangular mesh data , a systematic framework to solve the computer can not be all of the massive amounts of data is read into memory by the data block processed through the data compression to solve the problem of mass data consumes a large amount of hard disk space . The main tasks are as follows: 1, for the measurement data obtained by the optical measuring device has a huge amount of data , this paper presents the first data zoning , massive data processing system framework design ideas compressed data divided by region , the establishment of overall framework , the design of the system structure, the data stream. On this basis, the functional design of the system framework . 2 research and the implementation EdgeBreaker compression algorithm, and in the original EdgeBreaker algorithm based on arbitrary triangle mesh compression algorithm . 3 , in the framework of the research system to a variety of basic algorithms, zoning algorithm, region search algorithm and multi-zone topology stitching algorithm . The large amount of data model for the practical application of the compression test and PCA principal component analysis to verify the feasibility of the system framework design ideas correctness . OpenGL - based display list technology to achieve a massive three-dimensional data quickly . Reverse engineering , mass data processing system framework of key technology research is important, and laid the foundation for the research group next step .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Data collection and processing systems
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