论文标题
虚拟现实中3D表面上曲线的空中图
Mid-Air Drawing of Curves on 3D Surfaces in Virtual Reality
论文作者
论文摘要
复杂的3D曲线可以通过在沉浸式环境中直接绘制空气（增强和虚拟现实）来创建。但是，在3D虚拟物体的表面上绘制中间的中风很困难。需要将中风投影到用户“预期”的表面曲线上。我们介绍了VR中3D中风投影的基本问题的首次详细研究。对VR中3D对象的实时曲线实时绘制的设计要求的评估之后，对3D冲程投影的多种技术进行了定义和分类。我们在理论上和实用的试点测试中分析了这些方法的优点和缺点。然后，我们正式评估了两种最有前途的技术喷雾剂和模仿VR中的20位用户。该研究表明，对我们的新型中风模拟投影算法有强烈的定性和定量用户偏好。我们进一步说明了模仿中风的有效性和效用，以在各种艺术和功能设计应用的表面上绘制复杂的3D曲线。
Complex 3D curves can be created by directly drawing mid-air in immersive environments (Augmented and Virtual Realities). Drawing mid-air strokes precisely on the surface of a 3D virtual object, however, is difficult; necessitating a projection of the mid-air stroke onto the user "intended" surface curve. We present the first detailed investigation of the fundamental problem of 3D stroke projection in VR. An assessment of the design requirements of real-time drawing of curves on 3D objects in VR is followed by the definition and classification of multiple techniques for 3D stroke projection. We analyze the advantages and shortcomings of these approaches both theoretically and via practical pilot testing. We then formally evaluate the two most promising techniques spraycan and mimicry with 20 users in VR. The study shows a strong qualitative and quantitative user preference for our novel stroke mimicry projection algorithm. We further illustrate the effectiveness and utility of stroke mimicry, to draw complex 3D curves on surfaces for various artistic and functional design applications.
