Trends in Japanese Visualization Community - PKU...

Trends in Japanese Visualization Community

Koji KOYAMADA

Kyoto University

Visualization workshop 2013

Content

Overview of VSJ(Visualization Society of Japan)

History

Activities

Publication・Conference・SIG(Special Interest Group)

Flow visualization

Experiment/Measurement Results

PIV

Data visualization

Scientific visualization

Information visualization


History

1973 Symposium on Flow Visualization

1977 ISFV (International Symposium on Flow Visualization), Tokyo

1981 Flow Visualization of Japan

1990 Visualization Society of Japan

2011 Incorporation

Member 992

Student member 12

Honorary member member 37

Supporting member 65 Visualization workshop 2013

1st ISFV in Tokyo (1977)


Overview of activities

Objective Facilitate advancing research activities and the knowledge on

visualization, and contribute to the academic development in Japan Work closely together in both flow and visualization technologies http://www.visualization.jp/

Flow visualization Experiment/Measurement Results PIV

Data visualization Scientific visualization Information visualization

Common Data acquisition Data processing 3-D rendering，Statistics


http://www.visualization.jp/

Publication

Domestic journal “Transactions of Visualization Society of Japan” J-Stage Vol. 21 (2001) – Vol.31(2011)

International “Journal of Visualization” Springer Vol.1(1998)-Vol.14(2011)

Domestic magazine ”Journal of the Flow Visualization Society of Japan” Journal@rchive Vol.1(1981) - Vol.10(1990)

Domestic magazine ”Journal of the Visualization Society of Japan” Journal@rchive Vol.10(1990) - Vol.33(2013)


Guide line for publishing a JOV special issue

JOV can publish a special issue which includes general papers and papers presented in a workshop, symposium or conference (technical meeting).

Papers are reviewed under the same reviewing process as regular papers.

The technical meeting organizer, who wish to publish a special issue, asks VSJ for the cooperation.

The submissions for the special issue needs to be reviewed in advance by the program committee which includes JOV members (editorial board or associate editors) .


Recent issues Journal of the Visualization Society of Japan

2010/01

“CFD，Turbin，Vortex” 2010/07

”Automobile”

2010/04 “Psychological information””

2010/10

“Flow around insect” Visualization workshop 2013

Recent issues Journal of the Visualization Society of Japan

2011/01

“Burning combustion” 2010/07

“Atomic power”

2010/10

“Fuel buttery”

2011/04

“Design space using SOM” Visualization workshop 2013

Technical meeting

Domestic ” Visualization Symposium Japan”

Tokyo, in July, annually

222 oral presentations, 2013

Domestic ” Visualization Symposium Japan”

Local, in October, annually

Domestic” Visualization Conference”

Tokyo, in November, annually

International Symposium on Flow Visualization (ISFV)

Asian countries, in June, anually

International Conference on Fluid Control, Measurements, and Visualization (FLUCOME)

Asian countries，in December, annually

International Symposium on Particle Image Velocimetry (PIV)

Asian countries，in July, annually


International Technical Meeting on Data visualization ??

Asian countries，annually

Special Interest Group

Wind tunnel visualization Chair: Hiroyuki ABE

Micro flow visualization Chair: Masaaki KAWAHASHI

Visual data mining Chair: Koji KOYAMADA

Scientific art Chair: Yasuyoshi NAKAYAMA

Particle image velocimetry (PIV) Chair: Nao NINOMIYA

Wavelet-based intelligent visualization Chair; Akira RINOSHIKA

Mieruka Chair: Akio DOI


PARTICLE IMAGE VELOCIMETRY (PIV)

Special Interest Group


Two free-falling droplets

Time

論文：Nonlinear mechanics of fluidization of beds of spherical particles

研究者：A.F.FORTES, D.D.JOSEPH and T.S.LUNDGREN Visualization workshop 2013

PIV, which is an optical method of flow visualization, is used to obtain instantaneous velocity measurements and related properties in fluids.

Experimental set up

x

t = t0 t = t0 + Δｔ

14 Visualization workshop 2013

Droplets’ images

Interval：Δt = 5ms

t = t0

t = t0 + Δｔ Visualization workshop 2013

V=0

[mm/s]

60~

PIV processing results t = 1.67(s)

VL=61.84mm/s VR=72.72mm/s

L = 5.65mm (L0+1.32mm) H = 1.93mm (L0-15.37mm)

L = 8.49mm (L0+4.27mm) H = 2.17mm (L0-5.86mm)

VR= 69.09mm/s VL= 68.19mm/s

L0=4.35mm

H0=17.3mm

L0=4.32mm

H0=8.03mm


VISUAL DATA MINING Special Interest Group


Visual Data Mining for Simulation Results

From society to society


Society

problem setting

Hypothesis forming

Application

Hypothesis testing

Fused visualization

Spatial domain

Information visualization

Variable domain

Big data from supercomputer

Linked visualization

Fused visualization

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11

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j

i

n

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)1(1

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k

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PcB

Object space : Estimate density from transfer function Image space：Evaluate opacity as probability

tr

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es tr

2

1log

12

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Ensemble average


Demo

Fusion_en.wmv

Expectation for sorting-free rendering

Sub-image1 Sorting impossible

region1 Whole region


region2

Sub-image2

Particle-based Rendering

Represent a semi-transparent cell as a set of opaque particles

Use an ensemble average to improve the image quality


Simple cases

2

1blue

2

1red

1,0,0bluec 0,0,1redc

2

1,0,

4

11 blueblueredredblue ccB

CASE 1

CASE 2 1,0,0bluec 0,0,1redc

4

1,0,

2

11 redredbluebluered ccB

2

1blue

2

1red


CASE1

Ensemble


4

1redblue

4

11 redblue

4

11 redblue

4

111 redblue

CASE2


Ensemble 4

1redblue

4

11 redblue

4

11 redblue

4

111 redblue

Visualization in K-computer system Fujitsu Sci. Tech. Journal, Vol.38 No.4, 2012

# of processes

Quality of model

・Research laboratory

・Company R&D

・University

・Research institute

～100processes

～1K processes

～100K processes

★Big data files cannot be transferred to visualization environment

★Big data file ★Huge number ↓ Unrealistic workload and time for transferring files

SimSympo 2012

Visualization in K-computer system

The performance of the visualization is sustained even under highly massive parallel environment.

Summary

VSJ started its activities from flow visualization in 1970’s

Collaboration with asian countries

International Symposium

International Journal

VSJ integrated data visualization in the activities in 1990’s

Only domestic activities

Visualization conference


It is time to make the latter activity international

Trends in Japanese Visualization Community - PKU...

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