Research On3D Model Optimization Based On Interactive Rendering

The application of3D has expanded to almost every profession from traditional C/S toB/S structure.People will experience great effect made by3D software just by opening thebrowser,without downloading huge software or clients any more.It fulfils people‘s visualexperience much so that3D interactive rendering based on web is occupying an importantposition,and more3D panoramic and games are emerging.In addition,the reality and thereal-time have become the key measure among this applications.This article has accomplished interactive rendering subsystem in fine furnishing，every furniture production is displayed with3D stereoscopic effect,not2D picture anymore.As a result, it will improve fidelity and reality of productions and enhance itsattraction. People can freely design their own rooms and see the rendering results in areal-time so that they will obtain great interactive experience and reality sense.To satisfyneeds of reality and real-time in interactive rendering, this article has researched andoptimized in mesh simplification and illumination model technology.Accrording to existed simplification algorithms, this article proposes a composedtetrahedron simplification algorithm which takes three factors as vertex characteristicsmeasure based on geometric characteristics of tetrahedron. These factors include thedistance between vertex and plane,the angle of normal vector and the vertex curvature.Thekey characteristics vertex will be marked if it fulfils the three factors together,therefore,thereduced3D model will effectively retains its key characteristics with lower triangularplates.At the same time,this article combines bilinear intensity interpolation with bilinearinterpolation so that it will take full advantage of fast calculating speed and great high lighteffect respectively.As a result,this optimized algorithm will enhance the calculatingefficiency and reality effect.In addition, this article has adopted assistive technology whichincludes occlusion culling、 collision detection and furry rendering to maximize therendering speed and fidelity entirely in interactive rendering subsystem.This article has accomplished many experiments and comparisions with existedalgorithm.The results indenticated that its high effiency in small models and the later time ofbig models,simplified models have reserved the key characteristics and their own greatsense of reality.Besides,the optimized interpolation algorithm has better calculating speedthan that of bilinear interpolation with better high light effect.So this article has its utilityand reference values to some extent.