Abstract: A multi-factor biometrics authentication method including the steps of: acquiring a non-spectrometric biometric signature (e.g. fingerprint, iris pattern, etc.) of a biometric signature source (e.g. fingertip, iris, etc.) of a subject to be authenticated (e.g. person); acquiring spectral information (e.g. diffuse reflectance spectrum, reflectance spectrum, etc.) of the biometric signature source; using the non-spectrometric biometric signature to determine the unique identity of the biometric signature source; and using the spectral information to verify that the subject to be authenticated belongs to a predetermined class of objects (e.g. living persons). A biometrics system (e.g. fingerprint authentication device, iris pattern authentication device) is augmented with spectral biometrics capability in a practical manner without introducing much overhead to the base biometrics technology or inconvenience to users.

Abstract: A multi-factor biometrics authentication method including the steps of: acquiring a non-spectrometric biometric signature (e.g. fingerprint, iris pattern, etc.) of a biometric signature source (e.g. fingertip, iris, etc.) of a subject to be authenticated (e.g. person); acquiring spectral information (e.g. diffuse reflectance spectrum, reflectance spectrum, etc.) of the biometric signature source; using the non-spectrometric biometric signature to determine the unique identity of the biometric signature source; and using the spectral information to verify that the subject to be authenticated belongs to a predetermined class of objects (e.g. living persons). A biometrics system (e.g. fingerprint authentication device, iris pattern authentication device) is augmented with spectral biometrics capability in a practical manner without introducing much overhead to the base biometrics technology or inconvenience to users.

Abstract: An image highlight correction method comprising the steps of mapping the image data from RGB color coordinates to an illumination specific HSV color coordinate system the value axis of which is in the direction of the light source, estimating highlight free HSV coordinates for each pixel, and restoring a highlight free image in RGB representation. Image highlight correction programs and image acquisition systems that make use of this image highlight correction method are also disclosed.

Abstract: An image highlight correction method comprising the steps of mapping the image data from RGB color coordinates to an illumination specific HSV color coordinate system the value axis of which is in the direction of the light source, estimating highlight free HSV coordinates for each pixel, and restoring a highlight free image in RGB representation. Image highlight correction programs and image acquisition systems that make use of this image highlight correction method are also disclosed.