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FaceNet2ExpNet: Regularizing a Deep Face Recognition Net for Expression Recognition

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TLDR
FaceNet2ExpNet as mentioned in this paper proposes a new distribution function to model the high-level neurons of the expression network, which achieves better results than state-of-the-art methods.
Abstract
Relatively small data sets available for expression recognition research make the training of deep networks very challenging. Although fine-tuning can partially alleviate the issue, the performance is still below acceptable levels as the deep features probably contain redundant information from the pretrained domain. In this paper, we present FaceNet2ExpNet, a novel idea to train an expression recognition network based on static images. We first propose a new distribution function to model the high-level neurons of the expression network. Based on this, a two-stage training algorithm is carefully designed. In the pre-training stage, we train the convolutional layers of the expression net, regularized by the face net; In the refining stage, we append fully-connected layers to the pre-trained convolutional layers and train the whole network jointly. Visualization results show that the model trained with our method captures improved high-level expression semantics. Evaluations on four public expression databases, CK+, Oulu- CASIA, TFD, and SFEW demonstrate that our method achieves better results than state-of-the-art.

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Citations
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Proceedings ArticleDOI

Weakly-Supervised Deep Convolutional Neural Network Learning for Facial Action Unit Intensity Estimation

TL;DR: This work proposes a novel knowledge-based semi-supervised deep convolutional neural network for AU intensity estimation with extremely limited AU annotations, which can achieve comparable or even better performance than the state-of-the-art methods.
Posted Content

Identity-Free Facial Expression Recognition using conditional Generative Adversarial Network

TL;DR: Experiments on four facial expression datasets show that IF-GAN outperforms the baseline CNN and achieves state-of-the-art performance for FER.
Journal ArticleDOI

Facial Expressions Recognition for Human-Robot Interaction Using Deep Convolutional Neural Networks with Rectified Adam Optimizer.

TL;DR: The interaction between humans and an NAO robot using deep convolutional neural networks (CNN) is presented in this paper based on an innovative end-to-end pipeline method that applies two optimized CNNs, one for face recognition (FR) and another one for the facial expression recognition (FER) in order to obtain real-time inference speed for the entire process.
Journal ArticleDOI

Extracting human emotions at different places based on facial expressions and spatial clustering analysis

TL;DR: A novel framework for extracting human emotions from large‐scale georeferenced photos at different places is proposed and a happiness ranking list of places is generated based on human emotions calculated over 2 million faces detected from greater than 6 million photos.
Journal ArticleDOI

Facial expression recognition boosted by soft label with a diverse ensemble

TL;DR: A novel FER framework using a CNN and soft label that associates multiple emotions with each expression is presented and a novel label-level perturbation strategy to train multiple base classifiers with diversity is proposed.
References
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Proceedings Article

ImageNet Classification with Deep Convolutional Neural Networks

TL;DR: The state-of-the-art performance of CNNs was achieved by Deep Convolutional Neural Networks (DCNNs) as discussed by the authors, which consists of five convolutional layers, some of which are followed by max-pooling layers, and three fully-connected layers with a final 1000-way softmax.
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