NPR Animation

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NPR Animation

• Starcraft in Cartoon
• Speaker Shuen-Huei Guan
• 2001/1/8

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Keywords

• NPR
• Non-Photorealistic Rendering
• Cartoon Rendering
• Toon Shader
• Pen and Ink
• Cel-look, cel-shading

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Motivation

• NPR is slow for real-time rendering.
• So we decided to render it slowly and make it a
  clip of animation.
• And we love Starcraft! (Dont tell me youve
  never heard of it!)
• Then we got a cool idea remake a piece of
  classical animation in Starcraft with new(cute,
  cartoon) modeling , and of course in NPR cartoon
  effects!
• Isnt that funny?

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NPR Non-Photorealistic Rendering
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Some Inclusions of NPR

• Painterly Rendering
• Sketching, Pen-and-Ink, Engraving
• Rendering for Legibility
• Other Rendering Styles
• Stylized Halftoning
• Toon Shaders/Plug-Ins
• Silhouettes
• Real Time Techniques

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An Example of NPR Painterly Rendering
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An Example of NPR Sketches and Lines
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An Example of NPR Special fx with half-toning
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Other Examples of NPR
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Progress

• Pre-Production
• Cartoon Render
• Cinema Decomposition
• Camera Control
• Timing

• Post-Production
• 3D Modeling
• SFX
• AVI format
• Post-Process

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Cartoon Rendering

• Def Contour Line Discrete Shading
• Focus Contour(Silhouette) Shading
• Line by Object
• Shading by Light

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Cartoon Demo
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Contour

• Def Line between front face back face.
• Char Frame Coherence Line Continuity.
• Method
• Brute Force.
• Geometry Division.
• Modified Appels Algorithm
• Special Perlin Noise Function.

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Shading

• Method
• Angle between normal vector light source.
• Shading table.
• Modified interpolation.
• Shading mapping.

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Shading mapping
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Animation ProductionReproduction

• Animation Design Focus
• Pre process Settings
• Original Video Animation (OVA)
• Script Tran Script
• Post process Production
• Determine the Stage
• Model Design
• Camera Tran Script
• Light Settings
• Difference /w Reproduction(Re,always easier)

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Reproduction Design Focus

• Precise Section Analysis
• Fade in/out, Section Time Line, Determine object
  movement
• Guess the Positioning of the Stage
• True or False?(Not exactly, but still correct)
• Real Working
• Design Models for Replacing Original Ones.
• Sym Tran Script of Cameras, Lights
• Detail Corrections

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Reference

• SIGGRAPH 952000.
• For Cartoon Rendering
• Cartoon Rendering, March, 2000, Game Developer
  magazine.
• Non-Photorealistic Rendering (Toon), Game
  Developers Conference 2000.
• CartoonReyes on 3DS Max.
• For AVI format
• http//www.jmcgowan.com/avi.html
• MSDN Library

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Future Work

• More NPR effects
• More special effects(SFX) in production of
  animation.
• Partial Collision Detection.
• Model Picking in 2D.

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Author

• B86506016, Ping-Chun Kuo (windforce)
• B86506057, Shuen-Huei Guan (Drake)
• B86506058, Chuan-Chien Lin (just4u)
• 2001/1/8