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AssigneeValidity Sensors, Inc.
InventorsPallavi Satyan, Philip Yiu Kwong Chan
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A method and device for removing common artifacts, such as stiction, from fingerprint scans created by partial fingerprint scanners. The partial fingerprint scanner data is assessed to determine if successive partial fingerprint images are overly similar to each other, which can occur during stiction. If this similarity exceeds a preset threshold, then at least some of the overly similar partial images will be removed (redacted) from the overall image dataset. The complete overall image is generated from the redacted data set. This method is particularly useful for creating “intelligent” low-cost, low power partial fingerprint scanners and scanner driver chips that can pre-process the partial fingerprint data that is generated during the course of a finger swipe, and remove stiction artifacts on a real-time or near-real time basis using relatively simple and low power on-chip processing circuits, and then send the corrected data to more sophisticated processors for subsequent fingerprint analysis.
A method to correct artifacts in biometric images assembled from a plurality of partial images, said method comprising;
A method to reduce the distorting effect of stiction on fingerprint images assembled from a plurality of partial fingerprint images, said method comprising:
An integrated circuit chip for driving a partial fingerprint sensor, said chip comprising:
An integrated circuit chip for driving a partial fingerprint sensor, said chip comprising:
Dependencies are inferred from the claim text.