公开(公告)号：US11893100B2

公开(公告)日：2024-02-06

申请号：US17917780

申请日：2021-03-29

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg ,  Eric Setterberg ,  Mattias Carlén

IPC: G06F21/32 ,  G06V10/145 ,  G06V40/13 ,  G06V40/12 ,  G06V10/56 ,  G06V10/82 ,  G06V10/50 ,  G06V10/147 ,  G06V40/40

CPC classification number: G06F21/32 ,  G06V10/145 ,  G06V10/147 ,  G06V10/50 ,  G06V10/56 ,  G06V10/82 ,  G06V40/1318 ,  G06V40/1365 ,  G06V40/1382 ,  G06V40/1388 ,  G06V40/1394 ,  G06V40/45

Abstract: The present invention relates biometric authentication using an optical biometric arrangement comprising an image sensor comprising a photodetector pixel array configured to capture an image of an object, the image sensor being arranged under a color controllable light source comprising light source units, the method comprising: providing a light pattern comprising portions of different light intensity for illuminating the object; acquiring an image of the object, the image comprising image portions corresponding to the portions of different light intensity of the light pattern illuminating the object, at least one image portion being captured by pixels in the photodetector pixel array arranged directly under a light source being active during image acquisition, and at least one image portion being captured by pixels in the photodetector pixel array arranged under an at least partly in-active illumination area of the color controllable light source during image acquisition, and performing biometric authentication at least partly based on metrics extracted from the image portions.

公开(公告)号：US11900715B2

公开(公告)日：2024-02-13

申请号：US17917806

申请日：2021-03-29

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Johan Hammersberg ,  Eric Setterberg ,  Mattias Carlén ,  Su Liu

IPC: G06V40/13 ,  G06V10/145 ,  G06V40/12 ,  G06V10/56 ,  G06V10/82 ,  G06V10/147 ,  G06V40/40 ,  G06F21/32

CPC classification number: G06V40/1318 ,  G06F21/32 ,  G06V10/145 ,  G06V10/147 ,  G06V10/56 ,  G06V10/82 ,  G06V40/1365 ,  G06V40/1388 ,  G06V40/1394 ,  G06V40/45

Abstract: The present invention relates biometric authentication using an optical biometric arrangement comprising an image sensor comprising a photodetector pixel array configured to capture an image of an object, the image sensor being arranged under a controllable light source comprising light source units, the method comprising: providing a light pattern comprising portions of different light intensity for illuminating the object; acquiring an image of the object, the image comprising image portions corresponding to the portions of different light intensity of the light pattern illuminating the object, at least one image portion being captured by pixels in he photodetector pixel array arranged directly under a light source unit being active during image acquisition, and at least one image portion being captured by pixels in the photodetector pixel array arranged under an at least partly in-active illumination area of the controllable light source during image acquisition, performing biometric authentication at least partly based on metrics extracted from the image portions.

公开(公告)号：US11741745B2

公开(公告)日：2023-08-29

申请号：US17799822

申请日：2021-02-16

Applicant: Fingerprint Cards Anacatum IP AB

Inventor： Eric Setterberg ,  Johan Hammersberg ,  Jan Berglund

IPC: G06V40/12 ,  G06V40/13 ,  G06V10/143

CPC classification number: G06V40/1394 ,  G06V10/143 ,  G06V40/1318

Abstract: The present invention relates to a method for biometric authentication of a user of an electronic device comprising an optical fingerprint sensor arranged under an at least partially transparent display panel and configured to capture an image of an object located on an opposite side of the transparent display panel, the method comprises the steps of: illuminating the object with light of at least one distinguishable color; capturing at least two images of the object with an image sensor comprising a photodetector pixel array while illuminating the object with the light of at least one distinguishable color, wherein the images are captured for different applied forces by the object on the transparent display panel; and performing biometric authentication at least partly based on at least one relationship between the at least two images, the at least one relationship being related to a difference in pixel intensity from pixels in the photodetector pixel array arranged to detect light of the distinguishable color.