Using VRML and Virtual Reality

yardbellΤεχνίτη Νοημοσύνη και Ρομποτική

14 Νοε 2013 (πριν από 3 χρόνια και 1 μήνα)

69 εμφανίσεις

Three
-
Dimensional Visualization by

Using VRML and Virtual Reality

Tatsuki Ogino

Solar
-
Terrestrial Environment Laboratory,

Nagoya University

The Korea
-
Japan Space Weather Modeling Workshop
, 2008, Aug. 12


Virtual Reality (VR) System Using 3 Screens

Screen

Projector x 8

Gigabit Ethernet

Graphics computer (PC) x 8

Parallel control computer (PC)

Conceptual Diagram of PLAGS VR System

Advantage and Problems of

3D
VR
M


Movie

Advantage


* Everyone can use freely


* Can use by all kinds of PCs


Problems


* Large file size by using TEXT file format


* 3D movie file needs large fail capacity


* Need large memory in PC and desire graphic


board


* People can comfortably by using a PC with


2GB memory and graphic board




Virtual Reality (VR) System



1. Use VRML, AVS, OpenGL and other softwares


VRML: Everyone can use freely and everywhere


International Standard




2. CAVE System ~2 M$




3. P C V R S y s t e m ( w i t h l a r g e s c r e e n ) ~ 2 0 K $



4. P C V R S y s t e m ( w i t h u s u a l s c r e e n ) 2 ~ 6 K $



p o l a r i z i n g g r a s s e s, u n a i d e d V R, h i g h s p e e d I n t e r n e t


OpenGL Vizserver
TM
とは


SGI®
のグラフィックス・システムを、ネットワーク経由で


ク ラ イ ア ン ト マ シ ン か ら 遠 隔 利 用

S G I
P r i s m

グ ラ フ ィ ッ ク ス シ ス テ ム

名 大 S T E 研

ク ラ イ ア ン ト マ シ ン


PC
など)

遠隔利用者


Network

大規模

ストレージ

10TB

Disk

従来の
X Window System
と異なり、データやコ
マンドを転送しない。


画面のイメージのみをクライアントに送るため、巨
大なデータにも対応

3D Visualization System: SGI PRISM


VRML

3D
画像ファイル



One of the e
-
Science Projects (2006~ )

“Geospace Virtual Laboratory/Virtual Organization”




Solar
-
Terrestrial Environment Laboratory and


Information Technology Center of Nagoya University


(+ JAXA/ISAS, Ehime U and NICT)



Use
NAREGI
-
Beta version grid middleware

(1)
Data grid



Laboratory data, S
-
RAMP data, CAWSES data

(2)
Graphics grid and virtual reality grid

(3)
Computing grid


scheduler for supercomputers


heterogeneous computer link


programs minimizing communication amount



Virtual Laboratory



(1)

Provide and share the data of observations and


modeling/simulations


(2) Use mutually huge data of graphics, animation and


3
-
dimensional visualization through high speed network


(Super
-
SINET, JGN
-
2: 10Gbps to 40Gbps? in 2008)


(3) Share the 3D visualization data (VRML, VR)


Establish a system by which people can watch 3D


figures of geospace under their own remote control



Real Time, Animation, Virtual Reality (VR), Advanced IT



Objectives of Virtual Laboratory


1.
Real time accumulation of observation data and their
mutual utilization

2.
Produce new simulation/modeling data by physical
model using observation data as input

3.
Produce animation and 3D visualization (VRML, VR)
data

4.
Comparison and assimilation of simulation/modeling
data with observations

5.
Sharing of VR function through high speed network




One of the e
-
Science Projects (2006~ )

“Geospace Virtual Laboratory/Virtual Organization”



Solar
-
Terrestrial Environment Laboratory and

Information Technology Center of Nagoya University




Use NAREGI
-
Beta version



Data grid


STEL data, S
-
RAMP data, CAWSES data

(2) Graphics grid and virtual reality grid

(3) Computing grid


scheduler for supercomputers


program minimizing communication amount

How to Make 3D Movie

1. Use Advanced Visualization System (AVS)


3D AVS Player


Common use of 3D movie by remote control


M u r a t a ( E h i m e U n i v e r s i t y ), K G T


2. U s e V R M L ( V i r t u a l R e a l i t y M o d e l i n g L a n g u a g e )


M a k e f r e e d u e t o t h e o p e n a n d w o r l d s t a n d a r d


C a n u s e m a n y k i n d s o f f r e e v i e w e r s


C a n u s e o n I n t e r n e t

Make 3D Movie by VRML

Step 1

* Execute 3D simulation of magnetosphere.


Step 2

* Make each 3D VRML picture file using Fortran main
programs and package subroutines.


Step 3

* Make the 3D movie file by editing VRML files.

How to Use VRML and MHD Code


(Using the Fortran and C)



3D Visualization and 3D Animation Movie



DVD
-
ROM

(CAWSES Database)



Produce DVD
-
ROM which contains the method to use
VRML (Virtual Reality Modeling Language) by Fortran
and many examples of 3
-
dimensional visualization and
3
-
dimensional animation movie obtained from the
computer simulation of the solar wind
-
magnetosphere
interaction.

Magnetosphere: Cross scale coupling

Importance of magnetic reconnection for energy budget

Coupling between ion and electron inertia scales?

Structure of the magnetosphere and magnetic
reconnection in the tail

Plasmoid ejection in magnetotail by VRML

magnetic

reconnection

plasmoid

earth

Ejection of Plasmoid

NICT Koganei

Nagoya U

Kyoto U

Ehime U, IT Center

Kyusyu U

Yamanashi

SuperSINET

JGN


APAN

Abilene

SINET

Kanto
-
2

100Mbps

10Gbps

1Gbps

100Mbps

1Gbps

1Gbps

USA,

China, Korea

SuperSINET and JGN
-
2 (1
-
10 Gbps)



One of the e
-
Science Projects (2006~ )

Geospace Virtual Laboratory/Virtual Organization




Solar
-
Terrestrial Environment Laboratory and


Information Technology Center of Nagoya University


(+ JAXA/ISAS, Ehime U and NICT)



Use
NAREGI
-
Beta version grid middleware

(1)
Data grid



Laboratory data, S
-
RAMP data, CAWSES data

(2)
Graphics grid and virtual reality grid

(3)
Computing grid


scheduler for supercomputers


heterogeneous computer link


programs minimizing communication amount

Virtual Observatory

To estimate physical quantities in the huge space by using cross scale

coupling model and exchange the information via high speed network

A synthetic and integrated research project on “Space Weather Forecast”




Virtual Laboratory



(1)
Use mutually huge
GEOSPACE

data of graphics,
animation and 3
-
dimensional visualization through
high speed network (Super
-
SINET, JGN
-
2)


(2) Share the 3D visualization data (VRML, VR)


Establish a system by which people can watch


3D figures of GEOSPACE

under their own remote
control



Real Time, 3D Animation Movie,


Virtual Reality (VR)

Test of remote control of 3D visualization:


Ehime University and STEL, Nagoya University on March 8, 2007

GIGAbit Network and TV Conference System


On
-
line lecture using a video teleconferencing system

From Gigabit Network (2000
-
2003) to JGN2 (2004
-
2008)


Common Usage of the Information of Geospace Environment
Using High Speed Network

Near real
-
time exchange and common usage of information and data
on the Geospace (Solar
-
Terrestrial) Environment

3D Visualization, 3D Animation Movie,

Virtual Reality (VR)




STEL e
-
Science Project (2006~ )


“Geospace Virtual Laboratory/Virtual Organization”




Solar
-
Terrestrial Environment Laboratory and


Information Technology Center of Nagoya University


(+ JAXA/ISAS, Ehime U and NICT)




Use NAREGI
-
Beta version grid middleware


(1)
Data grid


(2)
Graphics grid and virtual reality grid

(3)
Computing grid





Test of remote control of 3D visualization:


Ehime University and STEL, Nagoya University on March 8, 2007

Solar activity damages to earth’s environment =>
need “Space Weather Forecast”




1)

Study of occurrence processes of solar energy

3)

Real
-
time observation and modeling of space weather map

From solar disturbances to damages

2)
Solar wind modeling by IPS observation

4)

Virtual observatory

NICT “Study of Space Weather Forecast”

Summary


Study of
release processes

of


solar energy


Solar
-
B


Grand
-
based observations



Radio wave observation of
solar wind



Real
-
time observations of magneto
-


sphere, ionosphere and thermosphere


modeling of
space weather map



Virtual observatory


Numerical simulation by using


observations



Carry out the
fundamental study of space weather forecast

with domestic and international


collaborations in framework of the international CAWSES program



To study the sun
-
earth system, composed of the sun, solar wind and earth (magnetosphere,


ionosphere, thermosphere), as
a unified system

by using observations from the sun up to the
earth’s atmosphere



A synthetic and integrated research project on “Space Weather Forecast”