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Image and feature quality for ocular blood vessel and face recognition, image enhancement and feature extraction, and fusion of ocular blood vessels with facial and / or sub-facial regions for biometric systems
Image and feature quality for ocular blood vessel and face recognition, image enhancement and feature extraction, and fusion of ocular blood vessels with facial and / or sub-facial regions for biometric systems
Biometric enrollment and verification techniques for ocular-vascular, periocular, and facial regions are described. Periocular image regions can be defined based on the dimensions of an ocular region identified in an image of a facial region. Feature descriptors can be generated for interest points in the ocular and periocular regions using a combination of patterned histogram feature descriptors. Quality metrics for the regions can be determined based on region value scores calculated based on texture surrounding the interest points. A biometric matching process for calculating a match score based on the ocular and periocular regions can progressively include additional periocular regions to obtain a greater match confidence.
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