ACM STUDENT CHAPTER MEETING!

THURSDAY – SEPTEMBER 20, 200112:30 – 2:00 PM

ENGINEERING BUILDING 1033

FREE PIZZA & SODA - REAL, NOT VIRTUAL!

Bill White will present a survey of several VR research projects that were demonstrated at SIGGRAPH 2001 in

Los Angeles this summer.

RECENT ADVANCES IN VIRTUAL REALITY

TECHNICAL SKETCHALVIN ON THE WEB

JAN JUNGCLAUS,FRAUNHOFER CENTER FOR RESEARCH IN COMPUTER

GRAPHICS

TECHNICAL SKETCHALVIN ON THE WEB

JAN JUNGCLAUS,FRAUNHOFER CENTER FOR RESEARCH IN COMPUTER

GRAPHICS

The Woods Hole Oceanographic Institute commissioned the development of a Web-based simulator of the ALVIN Deep Submersible Vehicle, used for scientific research at

extreme ocean depths.The simulator is used as a training tool for scientists to plan and rehearse their dives, in an effort to budget

energy consumption (i.e., outside lights, propulsion tanks, manipulator usage) and extend the length of dives.

TECHNICAL SKETCHVIRTUAL HUMAN ABDOMEN

KEVIN CHUGH,VR LAB – STATE UNIVERSITY OF NEW YORK AT BUFFALO

TECHNICAL SKETCHVIRTUAL HUMAN ABDOMEN

KEVIN CHUGH,VR LAB – STATE UNIVERSITY OF NEW YORK AT BUFFALO

Using a data-glove capable of measuring 3-D position as well as applied force, a doctor performs a palpation exam

on real humans.The resulting measurements are then used to produce a

haptic simulation of a virtual human abdomen, with realistic force feedback of soft tissue malleability.

TECHNICAL SKETCHELMO

KIYOSHI KIYOKAWA,COMMUNICATIONS RESEARCH LABORATORY

TECHNICAL SKETCHELMO

KIYOSHI KIYOKAWA,COMMUNICATIONS RESEARCH LABORATORY

Mixed-reality systems using see-through optical displays have traditionally been unable to deal with mutual

occlusion.Instead, virtual objects have been (a) transparent, (b) opaque but occluding real objects, or (c) opaque but

occluded by real objects.The Enhanced optical see-through display using an LCD panel for Mutual Occlusion uses a 5-camera system to capture depth maps, applying this info to produce a Z-

buffer yielding mutual occlusion.

TECHNICAL SKETCHENHANCED REALITY

RICHARD MARKS,SONY COMPUTER ENTERTAINMENT

TECHNICAL SKETCHENHANCED REALITY

RICHARD MARKS,SONY COMPUTER ENTERTAINMENT

Using special props, the user provides depth,

lighting, and background data to an enhanced reality

system.

The user can then modify the video image to include certain special effects, such

as rendering synthetic objects.

TECHNICAL SKETCHHEAD-MOUNTED PROJECTIVE DISPLAY

HONG HUA,UNIVERSITY OF ILLINOIS, URBANA-CHAMPAIGN

TECHNICAL SKETCHHEAD-MOUNTED PROJECTIVE DISPLAY

HONG HUA,UNIVERSITY OF ILLINOIS, URBANA-CHAMPAIGN

Head-mounted projective displays, containing two miniature projective lenses and a non-distorting retro-

reflective sheeting material, can be applied to interactive augmented environments, without the occlusion and

distortion problems associated with most head-mounted systems.

This system has been applied to a computer-generated game of GO between remote opponents.

TECHNICAL SKETCHLIFE-SIZED PROJECTOR-BASED DIORAMAS

KOK-LIM LOW,UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL

TECHNICAL SKETCHLIFE-SIZED PROJECTOR-BASED DIORAMAS

KOK-LIM LOW,UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL

CAVE-based display systems typically differ geometrically from the environments that they are displaying, forcing the user to resort to walking in place or execute “virtual

flying” to traverse the scene.In addition, the difference between the virtual environment’s geometry and the physical space of the CAVE system causes system latency errors, as well as

projector and tracker calibration difficulties.The diorama approach addresses these problems (and, to some extent, the problem of multiple untracked users viewing one scene) by using physical display surfaces

closely matching the actual scene geometry.

TECHNICAL SKETCHLIGHTING-SENSITIVE DISPLAYS

SHREE K. NAYAR,COLUMBIA UNIVERSITY

TECHNICAL SKETCHLIGHTING-SENSITIVE DISPLAYS

SHREE K. NAYAR,COLUMBIA UNIVERSITY

A series of compact photosensitive arrays are arranged around a display device, yielding a dense spatial sampling

of the illumination field near the display.

This illumination information is then used to modify a synthetic or scanned 3-D image, producing shading and shadows that are consistent with the location of the light

source.

TECHNICAL SKETCHTHROUGH-THE-LENS REMOTE OBJECT MANIPULATION

STANISLAV L. STOEV,UNIVERSITÄT TÜBINGEN

TECHNICAL SKETCHTHROUGH-THE-LENS REMOTE OBJECT MANIPULATION

STANISLAV L. STOEV,UNIVERSITÄT TÜBINGEN

To facilitate editing a virtual environment without having to travel from one’s current position within that

environment, this tool was developed.The user invokes a preview window of a remote location, then uses a stylus to manipulate the remote site (if the

stylus is positioned within the window) or the local site (if the stylus is placed outside the window).

TECHNICAL SKETCHPLACEWORLD

JON COOK,UNIVERSITY OF MANCHESTER

TECHNICAL SKETCHPLACEWORLD

JON COOK,UNIVERSITY OF MANCHESTER

PlaceWorld was developed as an

interface by which users could coexist and interact in

multiple virtual environments.The test cases included a radiosity model, a textured 3-

city tour, an artistic interpretation of VR history, and a CAD model of an oil rig.

TECHNICAL SKETCHSIMULATION FIDELITY METRICS

KATERINA MANIA,UNIVERSITY OF SUSSEX

TECHNICAL SKETCHSIMULATION FIDELITY METRICS

KATERINA MANIA,UNIVERSITY OF SUSSEX

The extent to which mental processes are affected by the use of an artificial immersive environment was tested by

studying memory recall and awareness states in a VE replica of an actual room.As expected, the

use of a head-mounted display resulted in more accurate memory responses than

the use of a desktop monitor.However, a rather surprising result was the fact that the

use of a realistic head-tracking system proved less successful than the use of a mouse for navigation

purposes.

TECHNICAL SKETCHSOLVING A 3D CUBE PUZZLE IN A CVE

ANTHONY STEED,UNIVERSITY COLLEGE LONDON

TECHNICAL SKETCHSOLVING A 3D CUBE PUZZLE IN A CVE

ANTHONY STEED,UNIVERSITY COLLEGE LONDON

The degree to which users in separate virtual environments can collaborate across a network was tested for two setups: a homogeneous system of two

CAVE platforms, and a heterogeneous system consisting of one CAVE and one desktop machine.Using a 3-D cube puzzle application,

the C2C proved analogous to a real-space condition, while the C2D

proved much less effective, with the non-immersed user rated as less

contributing or even uncooperative.

TECHNICAL SKETCHVIEW-DEPENDENT TEXTURE MAPPING OF VIDEO

VIVEK RAJAN,ELECTRONIC VISUALIZATION LABORATORY (UI-CHICAGO)

TECHNICAL SKETCHVIEW-DEPENDENT TEXTURE MAPPING OF VIDEO

VIVEK RAJAN,ELECTRONIC VISUALIZATION LABORATORY (UI-CHICAGO)

Producing realistic avatars to

represent human users in

collaborative virtual environments has been problematic,

especially in inherently dark CAVE systems.By taking a 3-D laser scan of the user’s head and

applying it as a texture map to the avatar’s head, a good static model is produced, with positioning and orientation determined by the CAVE’s head-tracking

system.

TECHNICAL SKETCHVIRTUAL SHOWCASES

OLIVER BIMBER,FRAUNHOFER INSTITUTE FOR COMPUTER GRAPHICS

TECHNICAL SKETCHVIRTUAL SHOWCASES

OLIVER BIMBER,FRAUNHOFER INSTITUTE FOR COMPUTER GRAPHICS

Using a half-silvered mirror sheet formed into a truncated cone, sitting on top of a graphics display table, real

objects inside a showcase are merged with virtual objects projected onto the screen.

Using active shutter glasses, infrared emitters, and an electromagnetic tracking device, stereo separation and graphics synchronization are implemented to provide a

seamless 360° view of a virtual artifact.

PANEL DISCUSSIONVR ART IN MUSEUMS & GALLERIES

ANSTEY, COX, HÖRTNER, SANDIN, SERMON, SHAW

PANEL DISCUSSIONVR ART IN MUSEUMS & GALLERIES

ANSTEY, COX, HÖRTNER, SANDIN, SERMON, SHAW

Virtual fiction: instead of having the audience identify with the main protagonist, as in a novel or film, the user

is the main protagonist.

Configuring the CAVE: A life-sized wooden puppet is used as

an interactive device with a CAVE environment.

VR as a public display medium: Does the “wow” factor still play a stronger role in attracting an

audience than the work itself?

PANEL DISCUSSIONVR MEETS MENTAL HEALTH

HODGES, HOFFMAN, RIZZO, SCHULTHEIS, STRICKLAND,WATSON, WIEDERHOLD, WIEDERHOLD

PANEL DISCUSSIONVR MEETS MENTAL HEALTH

HODGES, HOFFMAN, RIZZO, SCHULTHEIS, STRICKLAND,WATSON, WIEDERHOLD, WIEDERHOLD

Virtual experiences of the entire packing/airport/takeoff/flight/landing scenario are used to

overcome a patient’s fear of flying.

SnowWorld: Immersive VR is used to help reduce pain during

the wound treatment of burn patients.

VR provides the ability to conduct controlled mental health studies, in

dynamic 3-D stimulus environments, as well

as the capacity to record all behavioral

responses.

EMERGING TECHNOLOGIESILLUSIONHOLE

YOSHIFUMI KITAMURA,HUMAN INTERFACE ENGINEERING LABORATORY – OSAKA

UNIVERSITY

EMERGING TECHNOLOGIESILLUSIONHOLE

YOSHIFUMI KITAMURA,HUMAN INTERFACE ENGINEERING LABORATORY – OSAKA

UNIVERSITY

Sharing a stereoscopic

display is problematic

since the image must be

displayed from a single viewer’s

perspective, resulting in a distorted view for all other

viewers.

IllusionHole uses a display mask with a hole in the center to display multiple

viewpoints simultaneously, positioned

so each viewer can

only see the image from his or her viewpoint.

EMERGING TECHNOLOGIESJUST FOLLOW ME VR-BASED MOTION TRAINING SYSTEM

UNGYEON YANG,POHANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

EMERGING TECHNOLOGIESJUST FOLLOW ME VR-BASED MOTION TRAINING SYSTEM

UNGYEON YANG,POHANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

A user wears five highly reflective markers (on the ankles, wrists, and belly), and four cameras track the user’s

motions.

The Just-Follow-Me system is used to train users to learn certain limb-motion profiles (e.g., dance moves, golf

swings, etc.).

EMERGING TECHNOLOGIESMICRO ARCHIVINGTATSUYA SAITO,KEIO UNIVERSITY

EMERGING TECHNOLOGIESMICRO ARCHIVINGTATSUYA SAITO,KEIO UNIVERSITY

A high-definition multimedia space is created, suitable for academic research as well as basic educational use.

Visitors in this virtual environment are able to interact with common microscopic structures that normally can’t

be seen with the naked eye.

EMERGING TECHNOLOGIESMOBILE AUGMENTED REALITY SYSTEMS

STEVEN FEINER,COLUMBIA UNIVERSITY

EMERGING TECHNOLOGIESMOBILE AUGMENTED REALITY SYSTEMS

STEVEN FEINER,COLUMBIA UNIVERSITY

Routing and landmark images are then overlaid onto the mobile user’s see-through head-worn display.

A mobile user’s position and orientation are tracked via a backpack emitter and mapped to a campus model.

VIRTUAL RETINAL DISPLAY TECHNOLOGY(NOT PART OF SIGGRAPH 2001)

VIRTUAL RETINAL DISPLAY TECHNOLOGY(NOT PART OF SIGGRAPH 2001)

An object’s inverted image is directly projected onto the retina, the rod and cone cells of which are

responsible of transmitting signals to the brain

through the optical nerve .

•The drive electronics receive and process an incoming video signal, & control the image display.•The modulated light sources are multiplexed red, green, and blue laser pulse streams.•Two scanning mirrors are used to sweep horizontally and vertically across the image.•The viewer optics relay the scanned raster image to the glass or plastic oculars worn by the user.