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.