A comparison of units for visually measuring facial actions |
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Authors: | Joseph C Hager |
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Institution: | 1. Research Nexus, P. O. Box 883843, 94188-3843, San Francisco, CA
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Abstract: | Visual inspection and categorization of facial appearances constitute the most frequent and useful technique for measuring facial activity. The techniques developed, however, have different units with varying characteristics. In this paper, I discuss categorical and scalar units for facial measurement and show the relationship of categorical units listed by different researchers. |
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