Tour Into the Picture with Water Surface Reflection and Object Movements

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Tour Into the Picture with Water Surface
Reflection and Object Movements
CASA 2006
2006. 07. 05 Jinho Park Division of Computer
Science Korea Advanced Institute of Science and
Technology
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Outline

• Problem Definition
• Previous Work
• Overview
• Scene Modeling
• Motion Generation
• Rendering
• Experimental Results
• Conclusions

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Problem Definition
Given a still picture, we generate a walk-through
animation with water surface reflection while
allowing foreground objects to move.
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Previous Work
Image-based rendering Chen et al. 95, Gortler et
al. 96, Kang and Shin 04, Hoiem et al. 05
Tour Into the Picture Horry et al. 97
Extension of TIP Kang et al. 01
Stochastic Motion Textures Chuang et al. 05
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Overview
a still picture
an animation
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3D Scene Construction
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Estimation of Scene Parameters
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Constrained optimization problem
user-provided m pairs
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Three Types of Maps
3D Scene Decoration

• Texture map
• Mask map
• Reflection Map

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Reflection Map

• Pixel by pixel correspondence

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Stochastic motion texture for passive objects
Motion Generation
Animating Pictures with Stochastic Motion
Textures Chuang et al. SIGGRAPH 05
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Water Surface Movement
Interaction with objects such as ground, rocks,
and boats
RealFlow
geometry of water surface and interacting objects
approximated objects
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Rendering
Raytracing

• For each pixel, one ray is shot
• Intersection check order
• Foreground (lower depth gt higher depth)
• Background, Ground plane
• Water plane reflection map

background
image
camera
Foreground
ground
water
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Experimental Results
Intel Pentium PC P4 3.0 GHz, 2.0 GB RAM,
GeForce FX 5950
More than 10 frames/sec
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Conclusions
Generalization of TIP with water surface
reflection and object movements -
semi-automatic 3D scene modeling - water
surface reflection