Abstract
This study presents a geometric feature based automatic facial expression recognition system. The proposed system utilises the facial landmark points to determine the relative distances between the facial features in order to capture deformities caused by the movement of facial muscles due to different expressions. Three feature sets are generated by using landmark coordinates, relative distances between the facial points and a combination of both. Discriminating power of each feature set is determined by training different classification models for classifying an image into six basic emotions or neutral state. The proposed system is validated on two publically available facial expression databases. Experimental results show good accuracy of 95.5% for MUG database on the combined features by using ensemble neural network.
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Sharma, G., Singh, L. & Gautam, S. Automatic Facial Expression Recognition Using Combined Geometric Features. 3D Res 10, 14 (2019). https://doi.org/10.1007/s13319-019-0224-0
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DOI: https://doi.org/10.1007/s13319-019-0224-0