Travel in VR | Quality Factors

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來自 University of London 的課程

3D Interaction Design in Virtual Reality

30 個評分

University of London

3D Interaction Design in Virtual Reality

30 個評分

課程 3（共 5 門，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.

從本節課中

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

與講師見面

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

[MUSIC]

As with everything else in user interaction, when it comes to your chosen

solution and implementation of navigation in VR It is very important

that you evaluate it with the targeted user group of your application.

I will now take you through a few things which are important quality

factors you might wish to use in your user evaluation.

They are adapted from a paper by Bowman et al., from 1997 and

these factors help us understand how similar the virtual travel is to real

physical walking, which is essentially what we're trying to simulate here.

First, speed,

how much does the user have a sense of control over the speed of travel?

Note here, it should be about the sense of control rather than the actual control.

Sometimes the user might be assigned a constant speed, but

if this speed is well chosen and really works for the specific application,

then the user will have a better sense of control.

Comparing to actually having direct control of the speed but

in a very awkward way due to, for instance, limitations from their hardware.

Secondly, accuracy, how accurately is a user able to arrive at a desired target?

How likely will the user overshoot the target?

The next factor is spatial awareness, the user's implicit knowledge

of their position and orientation within the environment during and after travel.

Did they get disoriented during travelling?

Do they have a good sense of scale?

After exploring the VR scenario,

can they draw a accurate map of the virtual world they visited?

Next factor is ease of learning.

This is something easy for an novice user to use.

How long will it take on average for the users to get the hang of it?

You might also want to evaluate the method in terms of

ease of use once the user has learned the technique.

How complex it is for them to use it?

What is the cognitive load from their perspective?

Another factor to consider is information gathering, which is the users ability

to actively obtain information from the environment during their traveling.

Trying to find all of the objects they need to find during their experience.

After the experience, can they remember objects they saw in the virtual room?

And a very good overall evaluation would be presence or

place illusion and plausibility illusion.

Do they feel that they were really somewhere else, and

was the experience engaging and plausible?

Last but not least, how comfortable is the experience?

You might have designed a virtual travel technique that ticks all the other boxes

but if it makes a user feel sick, then it's unlikely they will enjoy it.

You don't need to use all the quality factors listed above.

Often it is a good idea to select a subset depending on your application.

For instance, if your application is a architectural walk-through

where the users can navigate a building before it's built, it is important for

them to have high level of spatial awareness and certance of place illusion.

However, in a action game, speed and

accuracy are more important.

[MUSIC]

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