Dimensional Information-Theoretic Measurement of Facial Emotion Expressions in Schizophrenia

Figure 1

Automated Action Unit recognition system. For each frame of a video, geometric changes in facial components (red curves) are automatically tracked, and textural changes due to temporary wrinkles are detected in multiple regions of interest (blue boxes). These extracted features are fed through pattern classifiers to yield activity of each Action Unit (green bars: longer bar means higher activity).