Stationary Hand Gesture Authentication Using Edit Distance on Finger Pointing Direction Interval

Figure 8

-direction of middle finger for raw data and filtered data.

(a) Samples of -direction for the middle finger in gesture “7631" extracted from the training data before the filtration

(b) Samples of -direction for the middle finger in gesture “7631" from the training data after the filtration. Note that the first 400~600 ms portion in the original data is truncated as well as the last portion which have −1 unit vector in -direction.