| The combination and widely application of virtual manufacturing and virtual reality has fundamentally changed the existing manufacturing model,and also had a tremendous impact on the related industries.Mobile phone design is a complicated project.It must be considered in much different way before actual production. Therefore,it is necessary to do digital simulation for mobile phone in designing stage, and build mathematical model and visual model to cover the inadequate analysis problem.So as to produce probable product to meet the needs of different users.According to the problem mentioned above,an OGRE-based virtual mobile phone design system is developed.Main work as follows:1.Systematic study of the virtual manufacturing key technologies,including modeling,simulation technology and virtual reality technology;Using 3DSMAX modeling platform,complete mobile phone model design and optimization the model,in order to reduce the number of triangles to minimum to meet the sence simulation systems realistic requirements.2.Basic analysis the architecture of virtual reality and scene simulation system,both are base on OGRE;Studied deeply how to use Visual.Net 2003 to do secondary development for OGRE in Windows platform;The four modules of the main part of the system are implemented,Including the virtual design,virtual robots,virtual assembly and interacttive feedback module;And complete mobile phone model collision detection experiments and material rendering,basically meet the mobile phone design system requirements;Designer not only can select the phone style freely,also can change the color,the shape of the phone and other basic features in the virtual scene of the system.3 According to the advantages of image retrieval approche,this design system embedded the theories and technologies of image retrieval approche are base on relevance feedback.In the random multifeature subspace of image,used the SVM-based image retrieval approche,developed an aided design subsystem;In this subsystem,desinger can select a suitable picture of the whole or parts of the phone in the picture database as soon as possible;And applied the subsystem to the interactive feedback modules of the main part of the system,effectively enhanced the efficiency of the system in virtual scene. |