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    Non-Linear Approaches for the Classification of Facial Expressions at Varying Degrees of Intensity

    Reilly, Jane and Ghent, John and McDonald, John (2007) Non-Linear Approaches for the Classification of Facial Expressions at Varying Degrees of Intensity. In: IMVIP 2007. International Machine Vision and Image Processing Conference, 2007. IEEE, pp. 125-132. ISBN 0769528872

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    The research discussed in this paper documents a comparative analysis of two nonlinear dimensionality reduction techniques for the classification of facial expressions at varying degrees of intensity. These nonlinear dimensionality reduction techniques are Kernel Principal Component Analysis (KPCA) and Locally Linear Embedding (LLE). The approaches presented in this paper employ psychological tools, computer vision techniques and machine learning algorithms. In this paper we concentrate on comparing the performance of these two techniques when combined with Support Vector Machines (SVMs) at the task of classifying facial expressions across the full expression intensity range from near-neutral to extreme facial expression. Receiver Operating Characteristic (ROC) curve analysis is employed as a means of comprehensively comparing the results of these techniques.

    Item Type: Book Section
    Keywords: support vector machines; computer vision; curve fitting; face recognition; image classification; learning (artificial intelligence); principal component analysis;
    Academic Unit: Faculty of Science and Engineering > Computer Science
    Item ID: 8345
    Identification Number:
    Depositing User: John McDonald
    Date Deposited: 16 Jun 2017 11:06
    Publisher: IEEE
    Refereed: Yes
    Funders: Science Foundation Ireland
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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