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1. Facial Motion Prior Networks for Facial Expression Recognition

## Algorithm:
![](https://i.imgur.com/uTniikj.png)

## Pros: 

- SOTA
 ![](https://i.imgur.com/FOtbnN2.png)

- Instead of making the network to learn active areas blindly, we choose to guide it via some pseudo ground-truth masks that are generated by modeling basic facial expressions.
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- Generate a facial mask to focus on facial muscle moving regions by using the average differences between neutral faces and the corresponding expressive faces as the training guidance.

## Cons:

- The training phase mainly contains two stages, training the generator for generating facial motion mask, and jointly training the whole recognition network.

- Not suitable for real time situations

2. 

