Verbesserte Lebenderkennung

Details

Veröffentlichungs-Nr.

EP4730284

Anmeldetag

15. Oktober 2024

Veröffentlichung

22. April 2026

Rechtsraum

EP

IPC

(HIRVONEN DAVID et al.)(GOOGLE INC et al.)

Abstract

Aliveness detection method for determining whether a presented face in respect of a user is a real face, comprising: obtaining an image sequence comprising a plurality of images. Each image comprises left eye image data and right eye image data. Each image in the image sequence being acquired of the presented face under a respective flash setting from a flash setting sequence, the flash settings in the flash setting sequence including at least two different flash setting values. The method further comprises processing the image sequence to detect speckles in the right eye image data and the left eye image data from the image sequence, which are caused by the eyes reflecting a flash applied under a flash setting when acquiring least one image in the sequence, the flash setting for the at least one image being brighter than the flash setting for a preceding and/or a succeeding image. The processing comprises applying a filter to enhance speckle image data corresponding to the speckles in the image sequence relative to non-speckle image data in the image sequence, and/or to suppress the non-speckle image data relative to the speckle image data. If one left eye speckle and one right eye speckle are detected respectively from the left eye image data and the right eye image data in the image sequence, determining whether the detected left and right eye speckles match each other. The method comprises outputting a liveness detection result based at least partially on the determination.

Anmelder

Firmen

Amadeus S.A.S.
ICM Airport Technics Pty Ltd.

Land

🇫🇷 Frankreich