基于数据手套的逼真虚拟手的实现.pdfVIP

第20 卷第22 期 系 统 仿 真 学 报© Vol. 20 No. 22 2008 年11 月 Journal of System Simulation Nov., 2008 基于数据手套的逼真虚拟手的实现 任 程，戴树岭 （北京航空航天大学自动化学院，北京 100083 ） 摘 要：在基于头盔、数据手套的虚拟现实系统中虚拟手的实现效果十分重要，传统的虚拟手模型 将手掌和各手指分割为多个刚体，当虚拟手运动时在刚体连接处产生重叠或裂缝，严重影响了沉浸 感。在此根据虚拟手的运动特点对其进行整体建模，并快捷地对数据手套采集的原始关节数据进 行校正，在可编程图形硬件上利用顶点混合算法将校正后的数据作用于虚拟手模型来产生皮肤变 形，在满足实时性的同时提供了逼真的视觉效果。最后还通过搭建实验系统验证了所述方法的可行性。 关键词：虚拟现实；数据手套；顶点混合；实时性 中图分类号：TP391.9 文献标识码：A 文章编号：1004-731X (2008) 22-6214-04 Implementation of Cyber-Glove Based Realistic Virtual Hand REN Cheng, DAI Shu-ling (School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China) Abstract: The effect of virtual hand is a key element for HMD-and-dataglove based VR system. The traditional virtual hand model treats fingers and palm as multiple rigid bodies, and immersive feeling is hence destroyed by gaps and overlaps between joints caused by acting of rigid bodies. A model for the whole hand was built according to its acting characteristic, the raw data of Cyeber-Glove joints was effectively adjusted, and then through vertex blending on programmable graphics hardware, the adjusted data was applied to hand model to achieve skinning, results showed that both real-time and vivid images were obtained. Also, its feasibility is proved by an experimental system. Key words: virtual reality; Cyber-Glove; vertex blending; real time 引 言 本文旨在分析并给出虚拟手的逼真视觉实现，在充分满