增强现实中虚实遮挡技术的研究现状

Survey on occlusion handling in augmented reality

增强现实是一种将虚拟现实技术运用在真实坏境上的新技术,其中虚拟物体和真实物体遮挡关系的正确表现对提高用户的真实感起到了关键的作用。概述了增强现实中虚实遮挡技术的发展历程,从基于深度计算和三维重建2个方向介绍了国内外研究者对虚实遮挡处理的研究,其中详细介绍了基于深度计算的方法,针对遮挡物获取、深度恢复和剔除效果处理3个主要步骤,分别对其基本原理和相关改进进行了说明。得到解决虚实遮挡问题的一般流程,并从2种角度对比了各种算法的优缺点。最后对虚实遮挡技术的发展给出了总结和建议。

Augmented reality is a new technology that works on real environment with virtual reality. Whether there is a cor- rect real-virtual occlusion is very important and it will enhance users＇ performance. This paper discusses the main method used by other researchers to resolve occlusion problem from 3D reconstruction-based approach and depth-based approach, and describes the depth-based approach in detail and explains the principles of three steps for depth-based approach ： detecting the real object, calculating the depth of real object, clipping the virtual object. The main steps for occlusion handling and a comparison between 3D reconstruction-based and depth-based approach from two perspectives are proposed. Finally, a conclusion and proposed work are presented.