Abstract: The application of light field imaging in the capture of biometric images enables image processing to use continuous focus adjustment of a single image to construct an image of a biometric feature that is in focus across an expanded depth of field. Because a single image is the source of all information, the final image is formed without requiring combination of multiple images that may have physically moved between capture of the images. Light field imaging can be accomplished through multiple methods including plenoptic cameras or focus stacking cameras. The use of near infrared wavelengths in images captured using light fields optimizes the deployment of biometric systems by eliminating intense visible light currently implemented to capture some biometrics. The use of near infrared wavelengths for light field imaging enhances iris capture as the iris display more useful characterization under near infrared illumination.

Abstract: A portable device for the live scanning of fingerprint, facial and crime scene images and the wireless transmission of said images to a central host system for identity verification. The portable device has the ability to allow the user to operate the device with a single hand. It can scan and record live fingerprint slap or roll images (via optical, solid state, or video sensors). It also includes a baffle that assists with the mechanical alignment of the fingerprints on the fingerprint sensor receiving surface and prevents bright light sources from interfering with fingerprint scans. The portable device also can scan, display, and record latent fingerprint images. It also has other data receiving and transmission functions, such as displaying and recording facial and incident scene images in conditions ranging from well lit to total darkness, recording and playing back incident scene audio information for incident description and contacting voice recordings for identification.