Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1

By Hans-Jörg Bullinger; Jürgen Ziegler | Go to book overview
Save to active project

A Study on How Depth Perception Is Affected by
Different Presentations of 3D Objects

Hanqiu Sun, Kwong Wai Chen, Pheng Ann Heng
Dept. of Computer Science & Engineering, The Chinese University of Hong Kong


1
Introduction

To achieve high-level realism of virtual reality (VR) system, the virtual environment should reproduce sufficient depth cues the same as human's perception in the real world. These include stereopsis, perspective, occlusion, shadows, texture and the like. Conventional graphics workstations can realize some of the depth cues such as occlusion, perspective, lighting and shade, atmospheric effect (e.g. fog). More sophisticated VR system can also render binocular disparity, motion parallax, interposition, and convergence. A virtual reality application, however, should provide high refresh rate so the user can interact with the application in real time. To achieve high frame rate, the application should be tuned and optimized for real-time performance. It is usually better to reproduce more depth cues, but it can take the computer with limited resource more time to render and thus degrade the performance. For instance, stereoscopic vision requires two display channels to be rendered in a frame interval. Since humans have only limited vision, more details may be at times unnecessary. It is important to found out what depth cues are really required and what can be ignored if a high frame rate is to be achieved.

In this project, we investigated how the depth perception is affected by different representations of 3D objects in static virtual scenes. We studied depth cues in human's perception, human stereo viewing, and stereo-graphics VR system (hardware & software components). Based on the study, a set of experimental trials was designed and conducted to evaluate the factors that may influence a subject's ability to estimate the depth of objects in a static scene. The experiments also measured how advanced rendering is really needed when presenting 3D objects in static virtual scenes.


2
Related Work

Many authors in the literature have discussed general issues on depth perception. There are, however, few specific studies in the computer graphics

-481-

Notes for this page

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
Loading One moment ...
Project items
Notes
Cite this page

Cited page

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

Cited page

Bookmark this page
Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1
Table of contents

Table of contents

Settings

Settings

Typeface
Text size Smaller Larger
Search within

Search within this book

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

While we understand printed pages are helpful to our users, this limitation is necessary to help protect our publishers' copyrighted material and prevent its unlawful distribution. We are sorry for any inconvenience.
Full screen
/ 1356

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

Cited passage

Welcome to the new Questia Reader

The Questia Reader has been updated to provide you with an even better online reading experience.  It is now 100% Responsive, which means you can read our books and articles on any sized device you wish.  All of your favorite tools like notes, highlights, and citations are still here, but the way you select text has been updated to be easier to use, especially on touchscreen devices.  Here's how:

1. Click or tap the first word you want to select.
2. Click or tap the last word you want to select.

OK, got it!

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.

Are you sure you want to delete this highlight?