Research Article

Online Signature Verification on MOBISIG Finger-Drawn Signature Corpus

Table 2

Global features.

Description#nf

Total signature duration1
Number of finger strokes1
Amount of time the finger touched the display1
The number of sign changes of 6
Mean of 6
Standard deviation of 4
Maximum value of 1
Mean velocity1
Mean acceleration1
Mean velocity in x direction1
Mean velocity in y direction1
Normalized point in time when the maximal value of is reached7
Normalized point in time when the minimal value of is reached6
Starting direction1
Histogram of sequence8
Histogram of r sequence16
Total62

#nf, number of features.