Face Alignment and Frontalization

Extracting fiducial Points

One Millisecond Face Alignment with an Ensemble of Regression Trees (2014)

• Gradient Boosting + Desition Tree for Regression
  • https://en.wikipedia.org/wiki/Gradient_boosting
  • Gradient Boosting에 대해 쉽게 설명되어있는 자료
    • http://www.ccs.neu.edu/home/vip/teach/MLcourse/4_boosting/slides/gradient_boosting.pdf
    • Gradient Boosting과 Adaboost의 관계
    • Why "Gradient" Boosting? 왜 Gradient 라고 불리는지에 대한 설명
  • The presentation material of authors' of Boosting
    • http://www.di.unipi.it/~cardillo/AA0304/fabio/boosting.pdf
• Why so fast?
  • 다른 방법들처럼 전체 Image를 검색하는 것이 아니라 mean shape(mean fisidual points)로 부터 점층적으로 주변 점을 뒤져 나간다. (By Strategy of Boosting)
    • Boosting means that We can upgrade system performance by adding (finer) regressor(prediction model) on previous knowledge
  • Gradient Boosting 에 Regression Tree를 사용함으로서