文章摘要
闫志远,吴冬梅,鲍义东,杜志江.三维虚拟摄像机的建模及其漫游控制方法[J].高技术通讯(中文),2013,23(2):181~188
三维虚拟摄像机的建模及其漫游控制方法
Virtual 3D camera’s modeling and roaming control
  修订日期:2012-04-26
DOI:
中文关键词: 虚拟现实(VR), 双目视差, 三维视觉, 三维虚拟摄像机, 漫游控制
英文关键词: virtual reality (VR), binocular parallax, 3D vision, 3D virtual camera, roaming control
基金项目:863计划(2009AA044001)资助项目
作者单位
闫志远 哈尔滨工业大学机器人技术与系统国家重点实验室 
吴冬梅 哈尔滨工业大学机器人技术与系统国家重点实验室 
鲍义东 哈尔滨工业大学机器人技术与系统国家重点实验室 
杜志江 哈尔滨工业大学机器人技术与系统国家重点实验室 
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中文摘要:
      利用矢量描述方法表达了虚拟现实(VR)中的虚拟单目摄像机模型,在此基础上,基于双目视差形成三维视觉的原理确定虚拟现实环境中双目三维摄像的控制参数及其约束关系,进而提出了包含两个单目虚拟摄像机的三维虚拟摄像机整体模型。针对该模型提出了一种基于机器人运动学方法的双目虚拟摄像机漫游控制方法,解决了虚拟现实三维观察参数难以实时改变而导致的视角局限和三维失真等问题。实验表明通过该三维虚拟摄像机可获取高质量三维效果,提出的漫游控制方法通过模型的自动运算和参数补偿可实时主动地获取任意方向的三维景深。这种由被动式虚拟三维向交互性虚拟三维的跨越对改进虚拟现实的沉浸感具有重要意义
英文摘要:
      A monocular virtual camera model was described using the vector description method. Based on this, the parameters of a 3D binocular virtual camera and their constraining relations were determined according to the binocular vision theorem, and then a 3D virtual camera model which contains two monocular virtual cameras was proposed. According to the 3D virtual camera model,a roaming control method for binocular virtual cameras was proposed based on robot kinematics to solve problems of viewing angle limitations and 3D imaging distortion caused by the fact that 3D observation parameters are difficult to change in common virtual reality. The experimental results show that the 3D virtual camera model and the roaming control model can be effectively used to observe virtual reality environments and make the parameters adjusted in real time based upon observation demand, which means that the shift from passive virtual 3D to interactive virtual 3D is of great significance to the improvement of 3D observation in virtual reality
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