Recent developments in sensing and communication technologies have led to an explosion
in the use of mobile devices such as smart phones and tablets. With the increase in the use …

Mobile devices have brought a great convenience to us these years, which allow the users
to enjoy the anytime and anywhere various applications such as the online shop** …

Continuous authentication has been proposed as a possible approach for passive and
seamless user authentication, using sensor data comprising biometric, behavioral, and …

In the last few years, there has been an increasing interest in develo** systems for
Automatic Lip-Reading (ALR). Similarly to other computer vision applications, methods …

Speaker verification systems traditionally extract and model cepstral features or filter bank
energies from the speech signal. In this paper, inspired by the success of neural network …

Recent research has demonstrated that lip-based speaker authentication systems can not
only achieve good authentication performance but also guarantee liveness. However, with …

Visual speech information plays an important role in automatic speech recognition (ASR)
especially when audio is corrupted or even inaccessible. Despite the success of audio …

Machine learning-based (ML) systems are being largely deployed since the last decade in a
myriad of scenarios impacting several instances in our daily lives. With this vast sort of …

Remarkable advances have been made in deep learning, leading to the emergence of
highly realistic AI-generated videos known as deepfakes. Deepfakes use generative models …

In this paper, automated user verification techniques for smartphones are investigated. A
unique non-commercial dataset, the University of Maryland Active Authentication Dataset 02 …