基于纹理映射的动态实时虚拟现实方法.pdfVIP

第28卷 第24期 计算机工程与设计 2007年12月 VO1．28 No．24 Computer Engineering and Design Dec．2007 基于纹理映射的动态实时虚拟现实方法 林 意， 侯宏伟 (江南大学信息工程学院，江苏无锡214000) 摘 要：提出了一种动态实时的进行纹理映射的方法，该方法首先通过自动寻找三维旋转模型主中轴线来与纹理图片的中 垂线进行配准，然后沿左右方向进行纹理保长等单位映射。该方法可将纹理图片等单位的映射到三维模型上，同时可以进 行模型修正和纹理图片的动态移动，纹理不会变形，这完全不同于其它指定多边形及相应纹理坐标进行插值的纹理映射方 法，后者将无法与用户进行交互且无法动态贴图。实现结果表明，该方法很好地模拟了现实世界的贴图效果，且具有很好的 灵活性、实用性和通用性，可以应用到陶瓷贴花的虚拟现实软件中，进行提前演示效果。 关键词：动态；纹理映射；实时；保长；虚拟现实 中图法分类号：TP391．41 文献标识码：A 文章编号：1000-7024(2007)24-6003-03 Dynamic and real—time method of virtual—reality based On texture mapping LIN Yi． HOU Hong—wei (School ofInformation Engineering，Southern Yangtze University,Wuxi 214000，China) Abstract：A method of dynamic and real—time texture-mapping is proposed，which first searches the axle wires ofthe 3d rotation-model and the texture picture automatically, and matches them． And then texture mapping of equilong and equal-unit is carried out through left and right．This method can map the texture picture on the 3D model commensurately, and supply revision of model and dynam ically moving oftexture picture that have been mapped on the model，accompanying with no deformation oftexture．Th is is not the same ab— solutely as other methods that appoint the coordinates ofpolygon and texture and interpolate on the inner region,the latter cannot alternate and move picture optionally．The result proves that this method simulates the real-world effect of mapping perfectly,and flexibility, practicability and commonality are showed．Th is method can be used in the virtual-reality system of texture mapping of crockery and china，demoing the effect previously． Key words：dyn amic；texture—·mapping；real··time；equilong；virtual··reality