Title:
FACE LIVENESS DETECTION
Document Type and Number:
WIPO Patent Application WO/2023/199571
Kind Code:
A1
Abstract:
Face liveness is detected by emitting an ultra-high frequency (UHF) sound signal through a speaker, obtaining an echo signal by detecting reflections of the UHF sound signal off of a surface with a plurality of sound detectors, extracting a plurality of feature values from the echo signal, and applying a classifier to the plurality of feature values to determine whether the surface is a live face.
Inventors:
BHAMIDIPATI ANUSHA V S (JP)
Application Number:
PCT/JP2023/002656
Publication Date:
October 19, 2023
Filing Date:
January 27, 2023
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
A61B5/1171
Foreign References:
| CN113100734A | 2021-07-13 | |||
| US20200201968A1 | 2020-06-25 | |||
| US20210110625A1 | 2021-04-15 | |||
| US20160371555A1 | 2016-12-22 | |||
| CN113657293A | 2021-11-16 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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