Results 81 to 90 of about 2,994,964 (187)

Research on anti-spoofing method of face recognition based on semi-supervised learning

open access: yes智能科学与技术学报, 2021
It is a long-term challenge to identify the real and fake faces in the images.When the synthetic fake faces are very realistic, it is difficult for machines and even naked eyes to distinguish the real and fake ones.The supervised anti-spoofing method ...
Li LI   +3 more
doaj  

An Anomaly Detection Approach to Face Spoofing Detection: A New Formulation and Evaluation Protocol

open access: yesIEEE Access, 2017
Face spoofing detection is commonly formulated as a two-class recognition problem where relevant features of both positive (real access) and negative samples (spoofing attempts) are utilized to train the system. However, the diversity of spoofing attacks,
Shervin Rahimzadeh Arashloo   +2 more
doaj   +1 more source

Access Control in Healthcare IoT: A Comprehensive Survey

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
This survey analyses access control mechanisms in Healthcare IoT, reviewing traditional and emerging models, identifying security and privacy challenges, and highlighting open research issues. It provides a comparative perspective to support the design of secure, scalable, and patient‐centric healthcare IoT systems.
Aleena Nazir   +3 more
wiley   +1 more source

The Case of Fleeting Orders and Flickering Quotes

open access: yesJournal of Futures Markets, Volume 46, Issue 4, Page 629-652, April 2026.
ABSTRACT The literature controversially discusses the ambiguous motives and driving forces behind quickly cancelled limit orders (fleeting orders), which are characteristic of high‐frequency markets. In particular, manipulative and dysfunctional characteristics are feared. We analyze top‐of‐book fleeting orders—so‐called flickering quotes—and show with
Markus Ulze   +2 more
wiley   +1 more source

Unidirectional Far‐Field Radiation of Surface Waves by On‐Chip Achromatic Metasurfaces

open access: yesNanophotonics, Volume 15, Issue 7, 13 April 2026.
Converting surface waves to unidirectional far‐field beams is essential for on‐chip photonics, but traditional couplers often suffer from inefficiency and frequency dispersion. This work experimentally demonstrates the concept of on‐chip achromatic metasurfaces, which can efficiently decouple broadband surface waves into unidirectional far‐field beams.
Haodong Li   +3 more
wiley   +1 more source

Taxonomy of IMT Interference on Aeronautical Systems

open access: yesRadio Science, Volume 61, Issue 4, April 2026.
Abstract The rapid deployment of 5G and future 6G networks has raised concerns about interference with critical aeronautical systems, particularly radio altimeters and Wireless Avionics Intra‐Communications (WAIC). This paper offers a comprehensive taxonomy of the 5G/6G signal interference mechanisms, operational impacts, and mitigation strategies in ...
Valéria C. M. N. Leite, Alison Moraes
wiley   +1 more source

A Smart Spoofing Face Detector by Display Features Analysis

open access: yesSensors, 2016
In this paper, a smart face liveness detector is proposed to prevent the biometric system from being “deceived” by the video or picture of a valid user that the counterfeiter took with a high definition handheld device (e.g., iPad with retina display ...
ChinLun Lai, ChiuYuan Tai
doaj   +1 more source

Domain Generalization and Domain Adaptation Approaches for Face Anti-Spoofing: A Survey

open access: yesIEEE Access
Face Anti-Spoofing (FAS), also referred to as Face Liveness, has emerged as a rapidly evolving field of research in Computer Vision. Closely tied to Face Recognition, its primary objective is to authenticate an identity by verifying its authenticity ...
Hanry Ham   +2 more
doaj   +1 more source

Exploring the Security of Mobile Face Recognition: Attacks, Defenses, and Future Directions

open access: yesApplied Sciences
Biometric authentication on smartphones has advanced rapidly in recent years, with face recognition becoming the dominant modality due to its convenience and easy integration with modern mobile hardware.
Elísabet Líf Birgisdóttir   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy