基于Leap Motion的虚拟现实陶艺体验系统

Virtual reality pottery modeling system based on leap motion

针对陶瓷工艺制作条件严苛导致普及受局限的问题,研发一套基于Leap Motion的虚拟现实陶艺体验系统,使用户得以脱离物理条件限制、以裸手交互的方式,简单直接地进行陶瓷制作工艺体验。在结构方面,将陶器划分为顶部、侧面、底面3部分,其中侧面结构基于简单均匀广义圆柱体,并利用高斯函数进行形变的约束控制;在交互方面,参考真实陶艺场景,依据陶器结构特性设计用户友好的手势动作和操作范围,并结合动作捕捉和虚拟现实技术,在保证陶器形变可控性的同时,提升系统体验的真实感和沉浸感。设计对比实验和陶器模型偏差值计算方法,量化证明系统可控性和体验的优越性。以沉浸感、完成度、操易度、趣味性4项作为调查问卷评估指标进行统计分析,验证系统良好的用户体验。

The manufacturing conditions of pottery are too strict which definitely restrict the spread of ceramic culture.To solve the problem,an immersive pottery modelling system equipped with Leap Motion and HTC Vive is developed,which is,and enables users to go through real pottery production process with their bare hands,free from the barrier of physical condition and.In terms of structure,the pottery is divided into three parts:the top,the side and the bottom.The side part derives from a simple generic homogeneous cylinder,while its profile deformation is controlled by Gaussian function.In terms of interaction,according to real pottery making scene as well as the characteristics of pottery structure,the system designs a series of user-friendly hand gestures and designates the operating range.And it’s supposed to improve the sense of reality and immersion of the experience,combined with motion capture and virtual reality technology,while the controllability of pottery deformation is guaranteed.In order to prove the superiority of system performance,this paper conducts a contrast experiment and proposes a target-practice variance computing method.In addition,a questionnaire which involves four evaluation indicators(immersion,completion,operative difficulty and enjoyment)is carried out,well verifying the system’s superior user experience.