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Authors = Shervin Minaee

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16 pages, 4232 KiB  
Article
Deep-Emotion: Facial Expression Recognition Using Attentional Convolutional Network
by Shervin Minaee, Mehdi Minaei and Amirali Abdolrashidi
Sensors 2021, 21(9), 3046; https://doi.org/10.3390/s21093046 - 27 Apr 2021
Cited by 454 | Viewed by 25359
Abstract
Facial expression recognition has been an active area of research over the past few decades, and it is still challenging due to the high intra-class variation. Traditional approaches for this problem rely on hand-crafted features such as SIFT, HOG, and LBP, followed by [...] Read more.
Facial expression recognition has been an active area of research over the past few decades, and it is still challenging due to the high intra-class variation. Traditional approaches for this problem rely on hand-crafted features such as SIFT, HOG, and LBP, followed by a classifier trained on a database of images or videos. Most of these works perform reasonably well on datasets of images captured in a controlled condition but fail to perform as well on more challenging datasets with more image variation and partial faces. In recent years, several works proposed an end-to-end framework for facial expression recognition using deep learning models. Despite the better performance of these works, there are still much room for improvement. In this work, we propose a deep learning approach based on attentional convolutional network that is able to focus on important parts of the face and achieves significant improvement over previous models on multiple datasets, including FER-2013, CK+, FERG, and JAFFE. We also use a visualization technique that is able to find important facial regions to detect different emotions based on the classifier’s output. Through experimental results, we show that different emotions are sensitive to different parts of the face. Full article
(This article belongs to the Section Sensing and Imaging)
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