International Journal of Engineering and Technology

The fine tuning of gesture based emergency communication for disabled and patients require more precise and pristine gestures which are recognizable without any dilemma. The acceptance for any decision making without any reservation needs a wide threshold range for every paradigm activity. The proposed research work in continuation with the previous works is set to identify such most unique paradigm activities that are to be selected for the used in such emergency gesture based response systems. The intra trial variability calculated for this purpose on all the trials of a particular paradigm with its reference gesture should be minimal to get overlaps on the reference and/or with its group components when classified. Wide difference of intra trials makes the choice of paradigm useless. This experiment uses FFT to generate features and the features are classified by LDA against the reference feature of the same subject. Performances are measured on the overlaps and minimal distance between the signal features and with their reference feature from the same subject. The findings show that the paradigms that involve more finger activities and hand pressure are intact against various trials and stands as a candidate to be used in the proposed system. This study and results reinforces our previous findings and confirms the credits of our methodology.