1552results about "Blood vessel patterns" patented technology

A biometric identification system directed toward use of dual-band visual-infrared imaging with appropriate techniques for integrating the analysis of both images to distinguish less reliable from more reliable image components, so as to generate a composite image comprised of layers. Correlation and analysis of the composite layers enables improved reliability in identification. The method and apparatus of the invention provide for efficient and optimized use of dual-band imaging for biometric identification of faces, fingerprints, palm and hand prints, sweat pore patterns, wrist veins, and other anatomical features of humans and animals.One embodiment includes the addition of a thermal infrared camera to a visual facial recognition system, with the IR image used to determine that the subject is alive and locate any features which are disguised. Another embodiment adds a visual camera to a thermal infrared facial recognition system, with areas of the visual image used to add colors and to fill-in behind eyeglasses which block the thermal infrared signature.

A method for extracting a local center-axis representation of a vessel, includes: placing first and second seed points in an image that includes the vessel, wherein the first and second seed points are placed near a beginning and an end of a centerline of the vessel; representing the image as a discrete graph having nodes and edges, wherein the first seed point is a source node and the second seed point is a goal node; and finding a minimum-cost path between the first and second seed points by computing a cost of edges between the first and second seed points, wherein the cost of each edge is reciprocal to a vesselness measure of the edge.

A system and method for securing a financial transaction using a proxy code, which is assigned a transaction account number. An account issuer permanently assigns the proxy code to a transaction account correlated to the transaction device. The proxy code is uploaded onto the transaction device for later use in completing a transaction request. During transaction completion, the proxy code is provided to a merchant system in lieu of any sensitive account information. Since the proxy code is permanently assigned, the number need not be changed or updated on the merchant system once uploaded into a payment device or merchant database. The account issuer may manipulate the sensitive account information without need to alter the information stored on the merchant database. Since the proxy code contains no sensitive information, the sensitive information related to the transaction account is secured from theft.

The invention provides methods and systems for neurovascular imaging (150).

Methods and systems are provided for biometric sensing. An illumination subsystem provides light at discrete wavelengths to a skin site of an individual. A detection subsystem receives light scattered from the skin site. A computational unit is interfaced with the detection system. The computational unit has instructions for deriving a spatially distributed multispectral image from the received light at the discrete wavelengths. The computational unit also has instructions for comparing the derived multispectral image with a database of multispectral images to identify the individual.

A skin site of an individual is illuminated and light scattered from the skin site under multispectral conditions is received. The light includes light scattered from tissue beneath a surface of the skin site. Multiple biometric modalities are derived from the received light. The biometric modalities are fused into a combined biometric modality that is analyzed to perform a biometric function.