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Encyclopedia of Biometrics pp 308–314Cite as

Face Device

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Synonyms

Face acquisition; Face camera; Video camera; Visual sensor

Definition

A face device is a system to acquire a set of digital data samples representing a human face. As the human face is a complex 3D object, the data can be in several forms: a 2D image where the gray levels of the pixels represent the projected reflectance of the face surface under visible illumination; a 2D image where the gray levels of the pixels represent the projected reflectance of the face surface illuminated with an active source; a 2D thermal image representing the heat emitted by the face surface; 3D samples of the surface structure.

Face devices can be distinguished on the basis of the data dimension if it is active or passive. Face devices can be passive, i.e., based on the passive reflectance of ambient light by the body, or active, i.e., associated with an energy emitter and a sensor to capture the energy reflected by the face. The data captured can be either in 2D or 3D form.

A face device can be...

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References

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Author information

Authors and Affiliations

  1. Computer Vision Laboratory, University of Sassari, Piazza Duomo, 6 Alghero, Italy

    Massimo Tistarelli

Authors
  1. Massimo Tistarelli
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Editor information

Editors and Affiliations

  1. Center for Biometrics and Security Research, Chinese Academy of Sciences, Beijing, China

    Stan Z. Li (Professor) (Professor)

  2. Departments of Computer Science & Engineering, Michigan State University, East Lansing, MI, USA

    Anil Jain (Professor) (Professor)

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© 2009 Springer Science+Business Media, LLC

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Tistarelli, M. (2009). Face Device. In: Li, S.Z., Jain, A. (eds) Encyclopedia of Biometrics. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-73003-5_11

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