Human activity recognition is a key to a lot of applications such as healthcare and smart
home. In this study, we provide a comprehensive survey on recent advances and challenges …

The rapid development of the fifth-generation mobile networks (5G) and Internet of Things
(IoT) is inseparable from a large number of miniature, low-cost, and low-power sensors and …

With the flourish of the smart devices and their applications, controlling devices using
gestures has attracted increasing attention for ubiquitous sensing and interaction. Recent …

Ultrasonic ranging has been widely used in automobiles, unmanned aerial vehicles (UAVs),
robots and other fields. With the appearance of micromachined ultrasonic transducers …

2D face presentation attacks are one of the most notorious and pervasive face spoofing
types, which have caused pressing security issues to facial authentication systems. While …

Facial expression recognition (FER) is a crucial task for human-computer interaction and a
multitude of multimedia applications that typically call for friendly, unobtrusive, ubiquitous …

Recent years have witnessed increasing attention from both academia and industry on
contact-free acoustic sensing. Due to the pervasiveness of audio devices and fine …

A practical challenge common to state-of-the-art acoustic gesture recognition techniques is
to adaptively respond to intended gestures rather than unintended motions during the real …

We propose SonicASL, a real-time gesture recognition system that can recognize sign
language gestures on the fly, leveraging front-facing microphones and speakers added to …

The passive WiFi sensing research has largely centered on activity sensing using fixed-
location WiFi transceivers, leading to the development of several theoretical models that aim …