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

Figure 6

Subject 16 from the test part of ILSA database. (a) The assessed correlation coefficients < 0.946, = 0.919, and < 0.949 are below the preset threshold values (0.96, 0.92, and 0.95, resp.) and the identity of this person will not be verified neither by means of , , and nor by applying any of their combinations. (b) This subject will be identified as subjects 466 (Max() ~ 0.99, max(, , ) = 0.99); 312 (Max() ~ 0.98), 37 (Max() ~ 0.99); 134 (( + )/2 = 0.95, ( + + )/3 = 0.96); or 439 (min(, , ) = 0.94). When the patient’s ECG is compared to his own previously recorded ECG ( + )/2 = 0.93, ( + + )/3 = 0.94, max(, , ) = 0.95, and min(, , ) = 0.92.

(a)

(b)