这个代码是用Matlab写的心形代码，是通过点的形式编写的，看起来很有意思。-This code is written using Matlab heart-shaped code, through the form of written, looks very interesting.

Heart rate and QRS complex detection for ECG in MATLAB.

This paper proposes a low cost method for the esti-mation of blood parameters using photo-plethysmography (PPG) technique. Data is obtained non-invasively the fingertip, which is processed to estimate the heart rate and the hemoglobin concentration.

[6] Bland JM, Altman DG. Measuring agreement in method comparison studies. Stat Methods Med Res 1999 8:135–60. [7] MATLAB 2011a, The MathWorks, Inc., Natick, Massachusetts, United States. [8] Maeda Y, Sekine M, Tamura T. The advantages of weara

The MIO sensor emitted the OHR signal at 1 Hz. The method for derivation of this OHR the raw PPG signal was not made public by the manufacturers. Heart rate was extracted offline the ECG data using a MATLAB implementation of Afonso et al. [5].