Department of Computer Science and Intelligent Systems

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3D Visualization Methods for Art and Science
Department of Computer Science and Intelligent
Systems Oita University Hiroaki Nishino Tsuneo
Kagawa Kazuyuki Yoshida Kouichi Utsumiya
Virtual Campus by CG
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Where is Oita?
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Research Background and Characteristics
Building blocks to implement virtual museum

• Virtual environment to prototype new products and
  crafted objects.
• Development of basic functions and application
  systems for traditional arts and crafts.
• Networked VR for collaborative 3D modeling.
• Intuitive modeling interface for beginners and
  designers to easily creating aesthetically
  pleasing shapes.

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Virtual Fireworks System
real fireworks
virtual fireworks (3D)
virtual fireworks (2D)
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Virtual Ceramic Art Work System
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3D Shape Acquisition
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Modeling from Scanned Real Objects
Stone Buddhist image
Oita is home to many stone Buddhist images.
server
client
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3D Shape Morphing
destination
source
3D Morph
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IEC-base Modeling for Intuitive 3D Shape Design
IEC Interactive Evolutionary Computation
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IEC-empowered 3D modeler
buttons to set fitness value
current fitness value
IEC Modeler
Blender
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Primitive Shape Representation Using Superquadrics
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3D Models Made in Experiments
(a) Models made in realistic (b) Models made in
creative (c) Models made in creative
examination. examination 1.
examination 2.
ferocious green pepper
miserable green pepper
MN models made by the manual method. IEC
models made by the IEC method.
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Making Inartificial and UnpredictableShapes by
Using Existing Models
(a) example models derived from IEC-based
modeling with a single initial shape
initial shape
(b) example models derived from IEC-based
modeling with four initial shapes
initial shapes
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Real Model Production from 3D Data
Source data
Solid laser plotter, SLP-3000 manufactured
by Denken Corp.
Real models (10 to 20 hours to produce)
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Multi-modal Input for Intuitive 3D Modeling
CAD tool
freehand sketch
CAD tools to sophisticate the evolved shapes
hand gesture
IEC modeler to evolve and breed new shapes
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System Concept and Organization
imagination
Fuzzy Spline Curve Identifier (FSCI)
(a)
draw a freehand image of the target shape to
create
FSCI
rough sketch
(b1)
(b2)
Shape Approximation Module (SAM)
approximation by 3D model
segmentation by superquadrics
I like that one!
IEC-based 3D Shape Explorer (3DSE)
(c)
diversify the sketched model for exploration
3D shape exploration
Parametric 3D Molder (PM)
(d)
specify geometric parameters
elaborate the explored model
final elaboration
user
Software Components
Modeling Procedure
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2D Freehand Sketch Interface Using Fuzzy Inference
(a) Sketch with tablet-style PC
(b) Sketch with tablet device
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A Modeling Example
(a) freehand sketch (b) approximated 2D model (c)
3D deformable model (d) blended model
(e) derived models by IEC-based 3D shape explorer
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Collaborative 3D Modeling System Concept
positioning and blending
scaling
primitive selection (voice)
bending
tapering
twisting
shared collaborative design environment
craftsman with immersive virtual environment
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Conclusions

• Research and development of basic and common
  functions usable for Digital Museum construction
  such as 3D model acquisition and modeling,
  intuitive modeling interface, and networked VR.
• Development of application systems based on the
  functions.
• Development of Digital Museum through
  collaboration with research institutions in Korea
  and Kyushu.