Angle measured clockwise from the positive y axis to the perpendicular projection of the pen onto the writing plane. Azimuth values can be acquired as time-series data. Azimuth is a factor representing the pen inclination, and it is used together with altitude. These features are used for on-line signature verification.
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(2009). Pen Azimuth. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_1106
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DOI: https://doi.org/10.1007/978-0-387-73003-5_1106
Publisher Name: Springer, Boston, MA
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