Abstract
Emotion recognition has captured the attention of many researchers these days. However most of the researches have happened in emotion recognition from frontal faces. In real-world conditions, we may not always be able to capture the frontal faces. Hence, emotion recognition from non-frontal faces is the new research area. The Local Binary Patterns (LBP) is an important feature extraction technique. In our effort to find better variant of LBP for non-frontal emotion detection, we have used two possible variants namely Local Gabor Binary Pattern (LGBP) and Diagonal Crisscross Local Binary Pattern (DCLBP). The LGBP is further implemented with and without Angle Classification; which leads to total three methods of feature extraction. These three methods are used to classify the images based on facial emotion expressions. An image is divided into number of blocks. Feature vectors are created by concatenating histograms computed from each sub-block. Multi-class SVMs are used to classify angles and expressions. A comparative analysis of the three methods for non-frontal emotion recognition has been carried out and is presented in this paper. By analyzing different variants of a LBP, we can understand the importance of feature representation in non-frontal emotion recognition. Our experimental studies show that the LGBP with angle classification outperforms other two variants.
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Dosi, H., Keshri, R., Srivastav, P., Agrawal, A. (2020). Comparison Between LGBP and DCLBP for Non-frontal Emotion Recognition. In: Chaudhuri, B., Nakagawa, M., Khanna, P., Kumar, S. (eds) Proceedings of 3rd International Conference on Computer Vision and Image Processing. Advances in Intelligent Systems and Computing, vol 1024. Springer, Singapore. https://doi.org/10.1007/978-981-32-9291-8_27
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DOI: https://doi.org/10.1007/978-981-32-9291-8_27
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