保持真实：虚拟现实中通往真实世界的窗口（CS HC）---Elva

本文提出了一种新的虚拟现实环境中的交互模式，它包含一个被投影到虚拟表面上虚拟镜子或窗口，代表了反映真实世界的一个镜子或窗口的正确透视几何。该技术可应用于各种视频、直播应用和虚拟现实设置，以提供交互式和沉浸式的用户体验。为了支持这种透视图的精确表示，我们使用了多用于特征检测和对应匹配的计算机视觉算法。为了约束解，我们在单应变换矩阵上加入了一个自动调整的缩放因子，使得每个图像帧在用户的视线范围内平滑过渡。该系统是一个实时渲染框架，用户可以以真实存在参与到虚拟空间中。

原文题目：Keep It Real: a Window to Real Reality in Virtual Reality

原文：This paper proposed a new interaction paradigm in the virtual reality (VR) environments, which consists of a virtual mirror or window projected onto a virtual surface, representing the correct perspective geometry of a mirror or window reflecting the real world. This technique can be applied to various videos, live streaming apps, augmented and virtual reality settings to provide an interactive and immersive user experience. To support such a perspective-accurate representation, we implemented computer vision algorithms for feature detection and correspondence matching. To constrain the solutions, we incorporated an automatically tuning scaling factor upon the homography transform matrix such that each image frame follows a smooth transition with the user in sight. The system is a real-time rendering framework where users can engage their real-life presence with the virtual space.

原文作者：Baihan Lin

原文链接：https://arxiv.org/abs/2004.10313