Pen-tip Position (Pen Coordinates)

Position of the pen-tip on the writing plane.

The pen-tip position is generally represented using Cartesian coordinates (x; y). The time series of x-coordinates x(t) and y-coordinates y(t) are acquired by a capture device at a sequence of sample points. x(t) represents the position on the horizontal axis and y(t) represents the position on the vertical axis at each time t. This feature is used for on-line signature verification. Concatenating consecutive sample points (x(t); y(t)) reproduces the shape of the signature.

Signature Recognition