Abstract
In this work, we examine landmark localization and feature extraction approaches for the unexplored topic of therapeutic facial exercise recognition. Our goal is to automatically discriminate nine therapeutic exercises that have been determined in cooperation with speech therapists. We use colour, 2.5D and 3D image data that was recorded using Microsoft’s Kinect. Our features comprise statistical descriptors of the face surface curvature as well as characteristic profiles that are derived from face landmarks. For the nine facial exercises, we yield an average recognition accuracy of about \(91\,\%\) in conjunction with manually labeled landmarks. Additionally, we introduce a combined method for automatic landmark localization and compare the results to landmark positions obtained from Active Appearance Model fitting as well as manual labeling. The combined localization method exhibits increased robustness in comparison to AAMs.
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Acknowledgements
We would like to thank the m&i Fachklinik Bad Liebenstein (in particular Prof. Dr. med. Gustav Pfeiffer, Eva Schillikowski) and Logopädische Praxis Irina Stangenberger, who supported our work by giving valuable insights into rehabilitation and speech-language therapy requirements and praxis. This work is partially funded by the TMBWK ProExzellenz initiative, Graduate School on Image Processing and Image Interpretation.
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Lanz, C., Olgay, B.S., Denzler, J., Gross, HM. (2014). Facial Landmark Localization and Feature Extraction for Therapeutic Face Exercise Classification. In: Battiato, S., Coquillart, S., Laramee, R., Kerren, A., Braz, J. (eds) Computer Vision, Imaging and Computer Graphics -- Theory and Applications. VISIGRAPP 2013. Communications in Computer and Information Science, vol 458. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44911-0_12
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DOI: https://doi.org/10.1007/978-3-662-44911-0_12
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