【摘要】 给出一种在头戴设备VR环境中交互式建模机制,通过头戴式VR设备手柄可输入点、线、面基本骨架,对于给定的可变半径信息,在GPU上采用CUDA(Compute Unified Device Architecture)并行计算带权重的距离场,并进一步采用并行Marching Cubes方法提取等距面。为避免多骨架等距面交接处的不光滑性,本建模系统采用加权滤波核函数根据骨架半径对距离场自适应光顺处理,从而生成基于骨架的多组件光滑混合模型。系统所提供交互方式自然,适合非专业人员的快速建模需求,并且所生成模型具有二维流形表面特征,可直接用于三维打印。更多还原

【Abstract】 An interactive modelling scheme in immersive VR environment is proposed, in which the point, line and polygon skeletons are inputted by handles of HMD(Head-Mounted Device). Weighted distance field is calculated in parallel with CUDA on GPU according to the varying radii, and then the iso-surface is extracted using paralleled marching cubes. In order to avoid the non-smoothness at interactions between different distance surface components, weighted filtering kernels are utilized to smooth the skeleton-based distance field with various radii in our modelling system, so that smooth blending model is produced from multi-component distance fields. In our system, natural interactions suitable for non-professionals are provided to create smooth models with manifold surface which can be directly 3 D printed without further post-process.更多还原