摘要
针对沉浸式虚拟环境下人手触摸三维立体像的直接交互问题进行了研究，提出了包含虚拟环境和线绳力反馈设备的直接交互系统框架，并着重对虚实空间注册、人手指尖末端位置解算和张力分解控制方法进行了分析。通过固定点法实现了虚空间和实空间的坐标统一；使用迭代逼近法解决了人手指尖末端位置解算的问题；使用子空间划分法解决了线绳张力分解控制问题。最后基于这种直接交互系统框架设计了人手直接玩三维虚拟球的虚拟壁球娱乐系统，并通过主观评价实验结果验证了该方法具有更好的交互性、真实感和沉浸性。
This paper studies the problem of the direct interaction between operator and 3D virtual image, and proposes a direct interaction system that includes a virtual environment and a string-driven haptic feedback device. Some key techniques, such as the registration of virtual space and real space, the hand space positioning and the string tension control, are studied. The coordinate unification of virtual space and real space is achieved using the specific point method. The iteravirtual squash enjoy system is given. The experimental data prove that the direct interaction system has the more natural and intuitive performance than an indirect interaction system.
出处
《高技术通讯》
CAS
CSCD
北大核心
2011年第7期743-749,共7页
Chinese High Technology Letters
基金
国家自然科学基金（60674052,60274035）资助项目.
关键词
直接交互
线绳力反馈
沉浸式虚拟环境
三维图像
direct interaction, string-driven haptic feedback, human-scale virtual environment, 3D image
