Npr animation
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NPR Animation. Starcraft in Cartoon Speaker: Shuen-Huei Guan 2001/1/8. Keywords. NPR Non-Photorealistic Rendering Cartoon Rendering Toon Shader Pen and Ink Cel-look, cel-shading. Motivation. NPR is slow for real-time rendering.

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NPR Animation

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Npr animation

NPR Animation

Starcraft in Cartoon

Speaker: Shuen-Huei Guan

2001/1/8


Keywords

Keywords

  • NPR

  • Non-Photorealistic Rendering

  • Cartoon Rendering

  • Toon Shader

  • Pen and Ink

  • Cel-look, cel-shading


Motivation

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! (Don’t tell me you’ve 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!

  • Isn’t that funny?


Npr non photorealistic rendering

NPR: Non-Photorealistic Rendering


Some inclusions of npr

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


An example of npr painterly rendering

An Example of NPR – Painterly Rendering


An example of npr sketches and lines

An Example of NPR – Sketches and Lines


An example of npr special fx with half toning

An Example of NPR – Special fx with half-toning


Other examples of npr

Other Examples of NPR


Progress

Pre-Production

Cartoon Render

Cinema Decomposition

Camera Control

Timing

Post-Production

3D Modeling

SFX

AVI format

Post-Process

Progress


Cartoon rendering

Cartoon Rendering

  • Def : Contour Line & Discrete Shading

  • Focus : Contour(Silhouette) & Shading

  • Line by Object

  • Shading by Light


Cartoon demo

Cartoon Demo


Contour

Contour

  • Def: Line between front face & back face.

  • Char: Frame Coherence & Line Continuity.

  • Method:

    • Brute Force.

    • Geometry Division.

    • Modified Appel’s Algorithm

  • Special: Perlin Noise Function.


Shading

Shading

  • Method:

    • Angle between normal vector & light source.

    • Shading table.

    • Modified interpolation.

    • Shading mapping.


Shading mapping

Shading mapping


Animation production reproduction

Animation: Production&Reproduction

  • 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)


Reproduction design focus

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


Reference

Reference

  • SIGGRAPH 95~2000.

  • 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


Future work

Future Work

  • More NPR effects

  • More special effects(SFX) in production of animation.

  • Partial Collision Detection.

  • Model Picking in 2D.


Author

Author

  • B86506016, Ping-Chun Kuo (windforce)

  • B86506057, Shuen-Huei Guan (Drake)

  • B86506058, Chuan-Chien Lin (just4u)

    2001/1/8


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