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公开(公告)号：US20190188441A1
公开(公告)日：2019-06-20
申请号：US16270480
申请日：2019-02-07
Applicant: InvenSense, Inc.
Inventor： Daniela HALL , Bruno FLAMENT , Jonathan BAUDOT , Etienne DeFORAS , Harihar NARASIMHA-IYER
CPC classification number: G06K9/0002 , G06K9/00087 , G06T7/0002 , G06T2207/20221 , G06T2207/30168
Abstract: In a method for evaluating a darkfield image for contamination, it is determined whether an object is interacting with a fingerprint sensor. Provided an object is not interacting with the fingerprint sensor, a darkfield candidate image is captured at a fingerprint sensor. The darkfield candidate image is evaluated for contamination. Based on the evaluating, it is determined whether the darkfield candidate image includes contamination.
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