Scatterings
Phase Mask Could Boost Iris Recognition Systems
Biometric imaging devices that recognize the unique fibrous structures of the human eye have been touted for security applications. An engineer has developed a phase mask that would make image acquisition easier for subjects to use by increasing the camera’s depth of field.
Biometric imaging devices that recognize the unique fibrous structures of the human eye have been touted for security applications. However, the technology can fail from poor image quality if the subject does not position an eye precisely within the relatively small “imaging volume” where the imager is in sharpest focus.
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