WALKING > WALKING IN PLACE > FLYING IN VIRTUAL ENVIRONMENTS - PowerPoint PPT Presentation

Loading...

PPT – WALKING WALKING IN PLACE FLYING IN VIRTUAL ENVIRONMENTS PowerPoint presentation | free to download - id: 25f097-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

WALKING > WALKING IN PLACE > FLYING IN VIRTUAL ENVIRONMENTS

Description:

Martin Usoh, Anthony Steed and Mel Slater. University College London ... 11000 polygon avatar. Enhancements to Original. Measures and Data Collection ... – PowerPoint PPT presentation

Number of Views:25
Avg rating:3.0/5.0
Slides: 22
Provided by: scie439
Learn more at: http://www.parchayi.net
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: WALKING > WALKING IN PLACE > FLYING IN VIRTUAL ENVIRONMENTS


1
WALKING gt WALKING IN PLACE gt FLYINGIN VIRTUAL
ENVIRONMENTS
  • Martin Usoh, Anthony Steed and Mel Slater
  • University College London
  • Kevin Arthur, Mary C. Whitton, Rui Bastos and
    Frederick P. Brooks
  • UNC

Siwe Hardah ?
Presentation by Siddharth Dalal
2
Background and Objectives
  • Slater Study walking
  • Research in Locomotion
  • Wide Area Trackers
  • Surrogate motion devices
  • Flying???
  • Button controlled locomotion to new location
  • Flying vs. Virtual walking vs. Real walking

Sid Im flying, Im flying Sid
3
Enhancements to Original
  • Real Walking
  • hey! watch that cable you cant see
  • custom optical tracker, 10m X 4m, 1mm
  • Virtual Walking
  • trained neural net for head motion

I dreamed a thousand new paths... I woke and
walked my old one.
4
Enhancements to Original
  • Flying
  • original point fingers at destiny
  • new
  • where you look there you shall go
  • what if I look down?

(I believe) I can Fly, (I believe) I can
Soar, unless I look down
5
Enhancements to Original
  • The Virtual World and Scenario
  • acrophobia
  • 40 times as many polygons on SGI Infinite Reality
    System

avatar means incarnation in Sanskrit/Hindi
6
Enhancements to Original
  • The Virtual World and Scenario
  • 11000 polygon avatar

7
Enhancements to Original
  • Measures and Data Collection
  • psychological measurements during immersion -
    nope they didnt do it
  • questionnaire based, with expanded set of
    questions
  • other stuff goodness scores for the net,
    videotape of everything

Statistics is like a Bikini what is revealed is
suggestive, but what is concealed is vital
8
The Experiment
  • SGI Onyx 2
  • One Graphics Pipe, Two Raster Managers
  • 4 195MHz R10000 processors
  • 2 GB Memory
  • Rendering
  • OpenGL - locally developed software
  • 30 fps

9
The Experiment
  • Viewing
  • Virtual Research V8 Head Mounted Display
  • (640 X 3) X 480 pixels per eye
  • on 1.3 LCDs
  • FOV - 60 deg diagonal at 100 overlap
  • Input Device
  • 4 button Joystick - Only used 2
  • Latency - 100ms, 500ms lag for walking in place

10
The Experiment
  • 44 Subjects
  • 33 Naïve - three groups of 6 men 5 women for
    in-place walking, walking, flying
  • 11 un-Naïve - including these in stats didnt
    make much difference
  • Simulator sickness questionnaire
  • Wouldve paid 10 bucks for the VR but taken 50
    for the questionnaire
  • (100 if it asked for Name and Address)

10 walk the thousand paths
11
The Experiment
  • What They Did
  • Practice - pick up blue box
  • Expt. - pick green box and take to chair
  • green box pickup opens door
  • Way to fly - walk over pit..

All Roads (also paths) lead to the Chair but I
was looking for Rome
12
Analysis
  • Original Questions - comparison
  • Enhanced Question set
  • Behavior Analysis
  • Binomial logistic regression analysis for
    Presence, Behavior and Locomotion
  • baseline model - locomotion method as independent
    variable

13
Results
  • Overall Conclusions
  • Title
  • User Reports
  • I was afraid to experience the falling sensation
    I might have had if Id walked straight ahead
  • 30 - damn cables
  • 15 - damn investigator

14
Results
  • Locomotion

15
Results
  • Behavioral Presence
  • 5 factors
  • awareness of background
  • pit feeling
  • pit feeling 2 - vertigo
  • willingness to walk over pit
  • did they do it?
  • Result Locomotion method didnt matter

16
Results
  • Subjective Presence
  • Association with Virtual body, NOT game playing
  • Old Study Results
  • No difference with method of Locomotion
  • FemalesgtMales
  • New Enhanced Study Results
  • WalkinggtFlying
  • Discomfort less presence Virtual walkgtReal

17
Unexpected
  • Whoa, Wow, Uh-Oh, The heck Im coming back..
  • This was unexpected
  • Sets a new standard
  • according to the authors
  • They venture out to guess why.

18
Observations, Lessons and Future Work
  • No cables
  • Neural net errors during Virtual Walking
  • Clothing of Avatar
  • BIPs due to Investigators
  • Ambiguous Questionnaire
  • need 650...

19
Links
  • http//www.cs.unc.edu/walk/
  • WalkThru Project (for cool Dr. Luebke photo)
  • http//www.cs.ucl.ac.uk/research/vr/
  • University College London
  • http//citeseer.nj.nec.com/slater95taking.html
  • The 1995 paper (which was HCI)
  • http//www.cs.virginia.edu/sgd2z/paper2.ppt
  • This Presentation

20
(No Transcript)
21
(No Transcript)
About PowerShow.com