Walk-in-Place

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来自 University of London 的课程

3D Interaction Design in Virtual Reality

44 个评分

University of London

3D Interaction Design in Virtual Reality

44 个评分

课程 3（共 5 门，Specialization Virtual Reality）

This course will teach you about one of the most important aspects of VR, how you interact with a VR world. Virtual Reality is completely different from an on screen app or game. You are completely immersed in a VR world, so it doesn't make sense to interact only through buttons or menus. You will get the most out of VR if you can interact with the world just as you would with the real world: with your natural body movements. You will learn about the basic concepts and technologies of VR Interaction. You will then get hands on, learning about how to move around in VR and how to interact with the objects in your world. The course will finish with some advice from experts on VR interaction design and you will do a project where you will get real experience of developing VR Interaction.

从本节课中

Moving around in VR

Welcome to Week 2! This week, we'll cover moving around in VR. We'll look at physical navigation, such as walk-in-place, and virtual navigation, such as teleportation. You will end the week by beginning your project, and submitting your work in progress.

Introduction to Navigation in VR3:21

Real Walking4:35

Redirected Walking3:37

Walk-in-Place3:17

Virtual Navigation3:14

Teleporting5:22

Teleportation4:50

Travel in VR | Quality Factors3:56

与讲师见面

Dr Sylvia Xueni Pan
Lecturer, Department of Computing
Goldsmiths, University of London
Dr Marco Gillies
Senior Lecturer
Computing Department, Goldsmiths, University of London

[MUSIC]

Walk-in-place is another way to navigate in VR and

it sits right in-between physical and virtual navigation.

This method encourages the user to engage their whole body in the realistic

walking motion as much as possible, but without actually moving forward.

Users would literally be instructed to walk in place.

Users should still be able to explore the virtual environment with their body,

like bending their body to look underneath the table.

But they should also be able to walk in the virtual environment

by mimicking the walking motion without physically moving forward.

The technical implementation could vary, but in most cases,

head rotation data is used to define the direction of traveling,

which is quite straightforward.

The less straightforward part is to determine the speed of traveling, or

simply whether the user is indeed walking or not.

The very first paper which proposed this

method in 1995 used a setup where only the position of head tracking is

used to determine whether the user is walking or not.

They used a machine learning algorithm to learn features from head position tracking

while the user is moving or not moving.

And with a large training data set,

they were able to predict whether the user is walking.

You can also use other types of tracking data, for instance head rotation or

a hand position, or a combination of these to determine the speed of travel.

For instance, the beauty in accelerometer and durometer which tracks the orientation

could also be used to measure inertia, which can be used to determine speed.

Other users can be moving their hands back and forth to mimic our arm movements

when walking, and how quickly they move their hands can be used to indicate speed.

One thing worth noting is that in both real walking and redirected walking

there is no need to give instructions to the user of how to walk.

They just walk the way they do, or at least the way they think they do.

They don't need to learn how to use these interfaces.

With Walk-in-place and all methods in virtual navigation,

it is necessary to explain to the user how the specific method works,

and ideally have a small training session where you let them

have a test run until they fully get the idea.

You should only let your users start the real VR experience or

a game after this training session.

As a developer, things that are obvious to you might not be so obvious to your user.

[MUSIC]

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