Dynamic Cascades with Bidirectional Bootstrapping for Action Unit Detection in Spontaneous Facial Behavior

@article{Zhu2011DynamicCW,
  title={Dynamic Cascades with Bidirectional Bootstrapping for Action Unit Detection in Spontaneous Facial Behavior},
  author={Yunfeng Zhu and Fernando De la Torre and Jeffrey F. Cohn and Yu-Jin Zhang},
  journal={IEEE Transactions on Affective Computing},
  year={2011},
  volume={2},
  pages={79-91}
}
Automatic facial action unit detection from video is a long-standing problem in facial expression analysis. Research has focused on registration, choice of features, and classifiers. A relatively neglected problem is the choice of training images. Nearly all previous work uses one or the other of two standard approaches. One approach assigns peak frames to the positive class and frames associated with other actions to the negative class. This approach maximizes differences between positive and… CONTINUE READING
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