Dynamic soft encoded patterns for facial event analysis

Peng Yang, Qingshan Liu, Dimitris Metaxas

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


In this paper, we propose a new feature: dynamic soft encoded pattern (DSEP) for facial event analysis. We first develop similarity features to describe complicated variations of facial appearance, which take similarities between a haar-like feature in a given image and the corresponding ones in reference images as feature vector. The reference images are selected from the apex images of facial expressions, and the k-means clustering is applied to the references. We further perform a temporal clustering on the similarity features to produce several temporal patterns along the temporal domain, and then we map the similarity features into DSEP to describe the dynamics of facial expressions, as well as to handle the issue of time resolution. Finally, boosting-based classifier is designed based on DSEPs. Different from previous works, the proposed method makes no assumption on the time resolution. The effectiveness is demonstrated by extensive experiments on the Cohn-Kanade database.

Original languageEnglish (US)
Pages (from-to)456-465
Number of pages10
JournalComputer Vision and Image Understanding
Issue number3
StatePublished - Mar 2011

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Computer Vision and Pattern Recognition


  • Dynamic feature
  • Facial expression
  • Time resolution

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