Personal Verification/Identification via Analysis of the Peripheral ECG Leads: Influence of the Personal Health Status on the Accuracy

Figure 8

Subject 174 from the PTB database-time interval between the recordings of ECG in and is 59 days. (a) The assessed correlation coefficients = 0.93 and = 0.94 are below the preset threshold values (0.96 and 0.95, resp.) and the identity of this person will not be verified. (b) This subject will be identified as 233 according to Max() ~ 0.96, ( + )/2 = 0.95, ( + + )/3 = 0.95, min(, , ) = 0.94, or as 236 if Max() ~ 0.96, Max() ~ 0.97, and max(, , ) = 0.97 are considered. When the patient’s ECG is compared to his own previously recorded ECG ( + )/2 = 0.94, ( + + )/3 = 0.94, max(, , ) = 0.94, and min(, , ) = 0.93.

(a)

(b)