1. Wavelets-based facial expression recognition using a bank of support vector machines.
- Author
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Kazmi, Sidra, Qurat-ul-Ain, and Arfan Jaffar, M.
- Subjects
- *
WAVELETS (Mathematics) , *FEATURE extraction , *FACIAL expression , *SUPPORT vector machines , *MACHINE learning - Abstract
A human face does not play its role in the identification of an individual but also communicates useful information about a person's emotional state at a particular time. No wonder automatic face expression recognition has become an area of great interest within the computer science, psychology, medicine, and human-computer interaction research communities. Various feature extraction techniques based on statistical to geometrical data have been used for recognition of expressions from static images as well as real-time videos. In this paper, we present a method for automatic recognition of facial expressions from face images by providing discrete wavelet transform features to a bank of seven parallel support vector machines (SVMs). Each SVM is trained to recognize a particular facial expression, so that it is most sensitive to that expression. Multi-classification is achieved by combining multiple SVMs performing binary classification using one-against-all approach. The outputs of all SVMs are combined using a maximum function. The classification efficiency is tested on static images from the publicly available Japanese Female Facial Expression database. The experiments using the proposed method demonstrate promising results. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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