Encyclopedia of Biometrics

2009 Edition
| Editors: Stan Z. Li, Anil Jain

Fusion, Physics-Based

Reference work entry
DOI: https://doi.org/10.1007/978-0-387-73003-5_563

Physics-based fusion makes use of the physical characteristics of the multispectral image acquisition process. In this fusion scheme, information on the spectral response of the sensor, the transmittance of the liquid crystal tunable filter (when used), the spectral reflectance of the object being imaged, and the spectral power distribution of the illuminant, are used, separately or in combination, as weights for the different sub-spectral images for their fusion.

 Multispectral and Hyperspectral Biometrics

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© Springer Science+Business Media, LLC 2009