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• W2907178645 abstract "Facial expression recognition (FER) is a very challenging problem in computer vision. Although extensive research has been conducted to improve FER performance in recent years, there is still room for improvement. A common goal of FER is to classify a given face image into one of seven emotion categories: angry, disgust, fear, happy, neutral, sad, and surprise. In this paper, we propose to use a simple multi-layer perceptron (MLP) classifier that determines whether the current classification result is reliable or not. If the current classification result is determined as unreliable, we use the given face image as a query to search for similar images. In particular, facial action units are used to retrieve the images with a similar facial expression. Then, another MLP is trained to predict final emotion category by aggregating classification output vectors of the query image and its retrieved similar images. Experimental results on FER2013 dataset demonstrate that the performance of the state-of-the-art networks can be further improved by our proposed method." @default.
• W2907178645 created "2019-01-11" @default.
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• W2907178645 date "2019-01-01" @default.
• W2907178645 modified "2023-10-01" @default.
• W2907178645 title "Facial Action Units-Based Image Retrieval for Facial Expression Recognition" @default.
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• W2907178645 doi "https://doi.org/10.1109/access.2018.2889852" @default.
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