Publication detail

An Information Analysis of In-Air and On-Surface Trajectories in Online Handwriting

SESA-NOGUERAS, E. FAÚNDEZ ZANUY, M. MEKYSKA, J.

Original Title

An Information Analysis of In-Air and On-Surface Trajectories in Online Handwriting

English Title

An Information Analysis of In-Air and On-Surface Trajectories in Online Handwriting

Type

journal article in Web of Science

Language

en

Original Abstract

This paper is aimed at analysing, from an information theory perspective, the gestures produced by human beings when handwriting a text. Modern capturing devices allow the gathering of data not only from the onsurface movements of the hand, but also from the in-air trajectories performed when the hand moves in the air from one stroke to the next. Our past research with isolated uppercase words clearly suggests that both types of trajectories have a biometric potential to perform writer recognition and that they can be effectively combined to enhance the recognition accuracy. With samples from the BiosecurID database, we have analysed the entropy of each kind of trajectories, as well as the amount of information they share, and the difference between intra- and interwriter measures of the mutual information. The results show that when pressure is not taken into account, the amount of information is similar in both types of trajectories. Furthermore, even if they share some information, in-air and on-surface trajectories appear to be notably nonredundant.

English abstract

This paper is aimed at analysing, from an information theory perspective, the gestures produced by human beings when handwriting a text. Modern capturing devices allow the gathering of data not only from the onsurface movements of the hand, but also from the in-air trajectories performed when the hand moves in the air from one stroke to the next. Our past research with isolated uppercase words clearly suggests that both types of trajectories have a biometric potential to perform writer recognition and that they can be effectively combined to enhance the recognition accuracy. With samples from the BiosecurID database, we have analysed the entropy of each kind of trajectories, as well as the amount of information they share, and the difference between intra- and interwriter measures of the mutual information. The results show that when pressure is not taken into account, the amount of information is similar in both types of trajectories. Furthermore, even if they share some information, in-air and on-surface trajectories appear to be notably nonredundant.

Keywords

Handwriting, biometrics, information theory

RIV year

2012

Released

01.06.2012

ISBN

1866-9956

Periodical

Cognitive Computation

Year of study

4

Number

2

State

US

Pages from

195

Pages to

205

Pages count

11

Documents

BibTex


@article{BUT95270,
  author="Enric {Sesa-Nogueras} and Marcos {Faúndez Zanuy} and Jiří {Mekyska}",
  title="An Information Analysis of In-Air and On-Surface Trajectories in Online Handwriting",
  annote="This paper is aimed at analysing, from an information theory perspective, the gestures produced by human beings when handwriting a text. Modern capturing devices allow the gathering of data not only from the onsurface movements of the hand, but also from the in-air trajectories performed when the hand moves in the air from one stroke to the next. Our past research with isolated uppercase words clearly suggests that both types of trajectories have a biometric potential to perform writer recognition and that they can be effectively combined to enhance the recognition accuracy. With samples from the BiosecurID database, we have analysed the entropy of each kind of trajectories, as well as the amount of information they share, and the difference between intra- and interwriter measures of the mutual information. The results show that when pressure is not taken into account, the amount of information is similar in both types of trajectories. Furthermore, even if they share some information, in-air and on-surface trajectories appear to be notably nonredundant.",
  chapter="95270",
  number="2",
  volume="4",
  year="2012",
  month="june",
  pages="195--205",
  type="journal article in Web of Science"
}