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Research Article Open Access
In this paper of a robust metric learning Approach on facial expressions using texture feature and KNN Based classifications, we basically emphasised on two factors in this field. The 1st and important thing is inherent subtlety, the appearance features and geometric features of spontaneous expressions basically the overlap with each other, so as to make it difficult for classifiers to find the effective separated boundaries. And the 2nd thing on which we are emphasising is, in all the training set it basically comes with a dubious class labels which can create an obstacle in recognization performance if no measure should be taken. In this paper we are implementing a new method called spontaneous expression recognization process, which is based on roboust metric learning so as to sought out with the two important issues in this paper. The most important requirement here is to increase the discrimination level in the different facial expressions. We got to know a new metric space in which a more number of chances are thereof same class is possessed by the spatially close data points. If we emphasis more in this , So to characterize all annotation reliability, we can define by specificity and sensitivity one annotator, instead of using the noisy level directly for metric learning techniques. The various comparative experiments can show us that our experiments have success percentage as compare to others in spontaneous facial expression recognization field and can be changed to recognize various other expressions.
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Author(s): Nayan Kumar Joshi, S. Valarmathy, Dr. T. Muthumanickam, T. Sheela