[Computer Animation] Computer Animation

Computer Animation

Animate

• to give life to or cause to come alive
• to make lively; enliven
• to encourage or inspire
• to impart motion to; move to action or work
• to record on film or video tape so as to give movement to => an animated cartoon

 

Animatronics

• Animation + Electronics
• 특수 효과 기술의 일종으로, 생물을 모방한 로봇을 사용하여 촬영하는 기술

 

Animation

• A way of making a movie by using a series of drawings, computer graphics, or photographs of objects(such as puppets or models) that are slightly different from one another and that when viewed quickly one after another create the appearance of movement. - Merriam-Webster's
  • cf). Live action movie
• Computer allows more flexibility
  • Eg). Special Effects, Interactive animation

 

Traditional Way

 

With Computer

• Interpolation(보간)
  • Keyframe Interpolation
  • Pose Interpolation
• Data-Driven
• Physically based Simulation

 

Interpolation

• 변수의 함수 형태는 알 수 없으나, 몇가지에 대한 함수가 알려져 있을 때, 그 사이의 임의의 값에 대한 함숫값을 추정하는 것

 

Key Interpolation	Pose Interpolation

 

Data-Driven

• 활용가능한 모든 데이터를 수집하고 분석한 뒤, 적용하는 것

 

• 참고
  • http://cvssp.org/projects/4d/HybridSurfaceMotionGraphs/
  • https://netease-gameai.github.io/ChoreoMaster/

 

Physically based Simulation

• 물리 법칙을 이용하여 애니메이션을 직접 구현하는 것

• 참고
  • https://www.youtube.com/watch?v=3yyLIG935zc 
• 여러 가지 방법을 혼합하여 애니메이션을 구현하기도 한다.
  • Physically based Simulation + Data-Driven + Machine Learning
    • https://xbpeng.github.io/projects/AMP/index.html
  • Physically based Simulation + 3D Printer
    • https://www.youtube.com/watch?v=xauEexkgYWY