The MagicBook— Moving Seamlessly between Reality and Virtuality ____ Projects in VR
The MagicBook— Moving Seamlessly between Reality and Virtuality ____ Projects in VR
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MagicBook — 在现实与虚拟之间无缝移动 ____ VR 项目
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M. Macedonia
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作者：
M. Billinghurst;Hirokazu Kato;I. Poupyrev;L. Rosenblum;M. Macedonia
十多年来，研究人员一直试图通过融合现实和虚拟现实来创建直观的计算机界面。我们的目标是让人们与数字领域的互动像与真实的世界一样容易。各种方法可以帮助我们实现这一点-在有形界面领域，我们使用真实的对象作为界面部件;在增强现实中，研究人员将3D虚拟图像叠加到真实的世界上;在VR界面中，我们完全用计算机生成的环境取代真实的世界。正如Milgram指出的那样，1这些类型的计算机界面可以根据用户环境中计算机生成的程度而沿着放置（图1）。在这条现实-虚拟线上，可触摸界面位于左边，而沉浸式虚拟环境位于右端。大多数当前的用户界面都是沿着这个连续体的离散点。然而，人类活动并不总是可以分解为离散的组件，对于许多任务，用户可能更喜欢沿着沿着现实-虚拟连续体无缝移动。这在与3D图形内容交互时证明是正确的，无论是创建虚拟模型还是查看它们。例如，如果人们想要体验不同尺度的虚拟场景，那么沉浸式虚拟现实可能是理想的。如果他们想在观看虚拟场景时进行面对面的讨论，增强现实界面可能是最好的。MagicBook项目是探索如何使用物理对象在现实和虚拟之间顺利传输用户的早期尝试。小孩子经常幻想自己飞进童话故事的书页，成为故事的一部分。MagicBook项目使用一本普通的书作为主界面对象，使这种幻想成为现实。人们可以在没有任何附加技术的情况下翻页、看图片和阅读文本（图2a）。然而，如果一个人通过增强现实显示器查看页面，他们会看到3D虚拟模型出现在页面之外（图2b）。这些模型显示为附在真实的页面上，因此用户可以通过移动自己或书籍从任何角度看到增强现实场景。虚拟内容可以是任何大小，并且是动画的，因此增强现实视图是传统3D弹出书的增强版本。用户可以通过翻页来改变虚拟模型。当他们看到一个他们特别喜欢的场景时，
or more than a decade researchers have tried to create intuitive computer interfaces by blending reality and virtual reality. The goal is for people to interact with the digital domain as easily as with the real world. Various approaches help us achieve this—in the area of tangible interfaces, we use real objects as interface widgets; in augmented reality, researchers overlay 3D virtual imagery onto the real world; and in VR interfaces , we entirely replace the real world with a computer generated environment. As Milgram pointed out, 1 these types of computer interfaces can be placed along a continuum according to how much of the user's environment is computer generated (Figure 1). Tangible interfaces lie far to the left on this reality–virtuality line, while immersive virtual environments are at the right extremity. Most current user interfaces exist as discrete points along this continuum. However, human activity can't always be broken into discrete components and for many tasks users may prefer to move seamlessly along the reality–virtuality continuum. This proves true when interacting with 3D graphical content, either creating virtual models or viewing them. For example, if people want to experience a virtual scene from different scales, then immer-sive virtual reality may be ideal. If they want to have a face-to-face discussion while viewing the virtual scene, an augmented reality interface may be best. 2 The MagicBook project is an early attempt to explore how we can use a physical object to smoothly transport users between reality and virtuality. Young children often fantasize about flying into the pages of a fairy tale and becoming part of the story. The MagicBook project makes this fantasy a reality using a normal book as the main interface object. People can turn the pages of the book, look at the pictures, and read the text without any additional technology (Figure 2a). However, if a person looks at the pages through an augmented reality display, they see 3D virtual models appearing out of the pages (Figure 2b). The models appear attached to the real page so users can see the augmented reality scene from any perspective by moving themselves or the book. The virtual content can be any size and is animated, so the augmented reality view is an enhanced version of a traditional 3D pop-up book. Users can change the virtual models by turning the book pages. When they see a scene they particularly like, …