iOS Heart rate detection Algorithm

Question

I\'m trying to implement heart beat recording functionality in an app i\'m developing.

The preferred method of doing this is by using the iPhone\'s camera with the light

Answer 1

I would :

1) Detect the period from peak to peak... If the period is consistent within a certain period threshold.. Then flag the HB as valid.

2) I would implement an outliar detection algorithm... Any beat that goes beyond a certain normalized threshold.. Would be considered an outlier an thus i would use the last detected beat instead to compute my BPM.

Another more complex approach would be to use a Kalman filter or something of sorts to be able to predict the bpm and get more accurate readings.. It is only after a few skips that the app will sense that the readings are not valid and stop the reading.