The widespread deployment of facial recognition-based biometric systems has made facial
presentation attack detection (face anti-spoofing) an increasingly critical issue. This survey …

Spoofing attacks or impersonation can be easily accomplished in a facial biometric system
wherein users without access privileges attempt to authenticate themselves as valid users …

Recent advances on biometrics, information forensics, and security have improved the
accuracy of biometric systems, mainly those based on facial information. However, an ever …

As a crucial security problem, anti-spoofing in biometrics, and particularly for the face
modality, has achieved great progress in the recent years. Still, new threats arrive inform of …

The video segmentation problem consists in the identification of the boundary between
consecutive shots. The common approach to solve this problem is based on dissimilarity …

Combining audiovisual sequences from different cameras requires precise alignment in
time. Current synchronization techniques involve using geometrical properties such as …

Strategies for representing spatial and temporal information from video sequences in
images are very convenient due to the demand for efficient tools for storing, browsing …

Video-based vehicle detection and counting play a critical role in managing transport
infrastructure. Traditional image-based counting methods usually involve two main steps …

The video segmentation problem can be regarded as a problem of detecting the
fundamental video units (shots). Due to different ways of linking two consecutive shots this …

This paper addresses gradual transition detection which is part of video segmentation
problem, and consists in identifying the boundary between consecutive shots. In this work …