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Publication Number
US-11531742-B2
Publication Date
2022-12-20
Expiration Date
Abstract
Methods and systems are provided for an AdHoc enrollment process. A user may be able to enroll and be verified by a system for a variety of actions or authentications without being forced to turn over personally identifiable information and without having to formally enroll. The system may compare captured biometric information with existing biometric information and may identify the user without the use of personally identifiable information.
Core Innovation
The invention relates to an AdHoc biometric enrollment/authentication process in which a user is registered in a system without formal enrollment and with omission of personally identifiable information (PII). A biometric modality associated with the user is captured at a first time, biometric data is extracted from the biometric modality, and a first template is generated from the first biometric data. The same biometric modality is captured again at a second time, second biometric data is extracted, and a second template is generated based on the second biometric data.
The process quantifies a degree of similarity between the first template and a second template. A confirmation is sent when the quantified degree of similarity exceeds a threshold, and an alert is generated when the quantified degree of similarity between a generated template and one or more stored templates is below a threshold. In system variants, the confirmation or alert is sent over a communication network to a user device, and a confirmation or alert can trigger an alarm system.
The invention also encompasses template generation and matching using algorithmic classification and similarity thresholds, including classification during template comparison. Multimodal fusion is described in which a first template is a fusion of data associated with a first biometric modality and a second biometric modality. Session tags can be added to biometric modalities, including images, and predetermined thresholds can be used to determine whether a generated template matches a second template, with confirmations and alerts routed to the user device accordingly.
Claims Coverage
The document includes three independent claims that cover method-based template enrollment with confirmation, system-based multimodal fusion with alerting, and an image-based session-tag template matching workflow with user-device notifications. Across the independent claims, the inventive features focus on capturing biometric modalities at different times, generating templates including fused templates, quantifying similarity against stored or second templates using thresholds, and sending confirmation or alert signals to a user device, optionally triggering an alarm system.
Two-time biometric template enrollment with similarity threshold confirmation
Capturing a first biometric modality associated with a user at a first time; extracting first biometric data; generating a first template based on the first biometric data; capturing the first biometric modality associated with the user at a second time after the first time; extracting second biometric data; generating a second template based on the second biometric data; comparing the second template with the first template to quantify a degree of similarity; and sending, when the quantified degree of similarity exceeds a threshold, a confirmation.
Fused multimodal template generation with threshold-based alerting
Receiving a first biometric modality and a second biometric modality associated with a user; generating a first template as a fusion of data associated with the first biometric modality and the second biometric modality; comparing the first template with one or more stored templates to quantify a degree of similarity; and sending, when the quantified degree of similarity between the first template and each of the one or more stored templates is below a threshold, an alert.
Imaging-device session-tag template matching with confirmation and alert
Capturing, using the imaging device, an image of a user; adding a session tag to the captured image; generating a first template from the captured image; determining, based on a predetermined threshold, whether the first template matches a second template; when the first template matches the second template, generating and sending a confirmation to the user device; and when the first template does not match the second template, generating and sending an alert to the user device.
Claim coverage is grounded in threshold-based template comparison workflows that send confirmation when similarity exceeds a threshold and send alerts when similarity is below a threshold. The independent claims further distinguish embodiments by a two-time capture/enrollment sequence, fused multimodal template generation, and imaging-device capture with session-tagging and predetermined threshold match determination.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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