Detecting patterns in waves

Question

I\'m trying to read a image from a electrocardiography and detect each one of the main waves in it (P wave, QRS complex and T wave). Now I can read the image and get a vector li

Answer 1

"Wavelet transform" may be a relevant keyword. I've once attended a presentation by someone who used this technique to detect different heartbeat phases in a noisy ecg.

As far as my limited understanding goes, it's somewhat like a Fourier transform, but using (scaled) copies of a, in your case heartbeat-shaped, pulse.