Contactless multispectral biometric capture

A contactless biometric system comprising:

• one or more illumination sources configured to illuminate a target space;
• a plurality of imagers configured to receive light from the target space under multispectral conditions, wherein each imager is configured to receive light from a different subspace of the target space;
• and
• an analyzer communicatively coupled with the one or more illumination sources and the plurality of imagers, the analyzer configured to control the operation of the one or more illumination sources and the plurality of imagers in order to produce a multispectral image of an object placed within the target space from the light received at any or all the imagers.

A method for collecting a biometric image comprising:

• illuminating a target space with one or more illumination sources;
• receiving light scattered from a portion of a purported skin site of an individual located within a first subspace of said target space with a first imager;
• receiving light scattered from a portion of the skin site located within a second subspace of said target space with a second imager;
• deriving a multispectral image of at least a portion of an object within said target space from the light received at either or both of the first imager and the second imager;
• and
• determining the identity of the individual from the multispectral image.

A contactless biometric system comprising:

• an illumination subsystem disposed to illuminate a predetermined spatial location in free space;
• an imaging subsystem disposed to collect light scattered by a purported skin site located within the predetermined spatial location;
• sensing means for sensing when the purported skin site is placed substantially within the predetermined spatial location;
• and
• an analyzer in communication with the illumination subsystem, the imaging subsystem, and the sensing subsystem, wherein the analyzer comprises instructions to operate the illumination subsystem, the imaging subsystem, and the sensing subsystem to derive a multispectral image of an object placed within the target space and imaged by the one or more imagers.

A contactless biometric system comprising:

• an illumination subsystem disposed to illuminate a predetermined spatial location in free space;
• an imager configured to receive light scattered from an objected located within the predetermined spatial, the imager comprising a plurality of pixels;
• a color filter array comprising a plurality of color mosaics, wherein each pixel of the imager corresponds to one of the plurality of color mosaics such that each pixel detects light associated only with the corresponding color mosaic, and
• an analyzer in communication with the illumination subsystem and the imager, wherein the analyzer comprises instructions to operate the illumination subsystem and the imager, and wherein the analyzer includes instructions to monitor the levels of blue light received at the imager through the color filter array and compute a mathematical function on the levels of blue light in proportion with levels of other light received at the imager.