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Multispectral imaging is a sophisticated technology that was developed by Lumidigm Inc. to overcome the fingerprint capture problems conventional biometric systems have in less-than-ideal conditions.
What’s the problem with Conventional Biometric Technologies?
Conventional biometric technologies rely on clear and complete contact between a fingerprint and the sensor, which isn’t always possible when you consider real-world, everyday situations. E.g. sweaty, dirty hands, or cool/warm environments.
So what’s the difference with Multispectral Imaging?
Multispectral imaging, on the other hand, is more effective in that it uses multiple spectrums of light and advanced polarisation techniques to extract unique fingerprint characteristics from both the surface and subsurface of the skin.
This subsurface information is unaffected by skin damage and other environmental factors. The net result is that Lumidigm’s advanced technology sidesteps the many problems that regular biometric technologies face in everyday work environments.
Additionally, Lumidigm’s subsurface capability can distinguish a real finger from an imposter or “spoof” fingerprint, making Lumidigm a leader in liveness detection.
Now for the Science bit!
Multispectral imaging looks at and beyond the skin surface to the subsurface foundation of the fingerprint ridges. Different wavelengths of visible light interact with the skin in different ways, enabling significantly enhanced data capture.
The fingerprint pattern on the surface echoes the subsurface structures from which they arose during development.
Multispectral imaging exploits the dependent relationship between surface and subsurface fingerprint patterns; subsurface data collected by multispectral imaging technology supports and augments surface data to create the highest-quality fingerprint image available.
For further in-depth technical information please Download our Biometrics Datasheet.
More information is also available from Lumidigm’s website.
© 2012 Mitrefinch Australia
