Video Analytic Based Health Monitoring for Driver in Moving Vehicle by Extracting Effective Heart Rate Inducing Features

Algorithm 1

Heart rate estimation algorithm.

Input: Image frame consist of RGB channel

Output: Estimated heart rate

Initialization: A video sequence within sliding window

For = 1, 2, …, N

 If == 1

  Detect a facial landmark points

  Select 6 facial landmark points for cheek and nose

 End

 Track the detected region of interest

 Detect skin region within region of interest

 If mod(, frame rate) == 0 and >= length of window

  For

   RGB normalization

   Calculate feature signal,

   Extract intrinsic mode function for heart rate from

   Power spectral density analysis

  End

  Filtering outlier using Mahalanobis distance, (, )

  Obtain heart rate result by averaging remaining estimates

  If

   Temporal filtering with estimated result

  End

 End

End