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The Research on Simplification of Vector Graph Mesh Model and Level of Detail

Author: ZhaoQuan
Tutor: LuZhangPing
School: Jiangsu University
Course: Mechanical Design and Theory
Keywords: Mesh model Mesh simplification Cumulative grid Grid transmission
CLC: TP391.9
Type: Master's thesis
Year: 2003
Downloads: 127
Quote: 1
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Abstract


Vector graphics grid model is a basic representation of the entities , in particular, to describe entities with complex curves and surfaces can be said is one of the most effective method of expression . Vector graphics grid model to describe complex objects , generally need tens of thousands of triangles to depict the complex details of the result of the large data object model . Because the rendering time and storage capacity , the triangle is proportional to the number of too large an object model for computer capacity and processing speed are presented very high demands. In order to meet the computer analysis , display and storage requirements of such model must be simplified , model simplification has a broad prospect in computer animation, virtual reality and interactive visualization computer applications . Due to the huge amount of data , without going through the data processing and storage of the entity grid model , edit , display and transmission, and other very inconvenient . Therefore , the grid model data processing is necessary . Need to draw a three-dimensional scene complexity is very high in the realistic graphics , to achieve realistic images such complex scenes in real time is very difficult . A natural idea is to reduce the complexity of the scene , and to improve the speed of the graphics rendering . In this paper, a simplified method of the current grid model , the use of a combination of mesh simplification based on edge collapse and secondary error metric method , a cumulative grid -based LOD reversible . SOCKET programming aspects of the use of in progressive grid data transmission method to achieve a progressive mesh data transmission in the network . Using a simplified model of a progressive mesh data mesh transmission , to achieve the effect of client use progressive mesh data generated LOD models . Paper mesh simplification , grid transmission innovative algorithms and the preparation of the corresponding computer software to analyze some specific examples to prove the efficacy of the above methods .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Information processing (information processing) > Computer simulation
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