The increasing amount of human-related and/or human-originated data in current systems is
both an opportunity and a challenge. Nevertheless, despite relying on the processing of …

An increasingly common requirement of computer systems is to extract information
regarding the people present in an environment. In this article, we provide a survey of the …

There is currently a significant interest in consumer electronics in applications and devices
that monitor and improve the user's well-being. This is one of the key aspects in the …

The research topic of looking at people, that is, giving machines the ability to detect, track,
and identify people and more generally, to interpret human behavior, has become a central …

We present StarLight, an infrastructure-based sensing system that reuses light emitted from
ceiling LED panels to reconstruct fine-grained user skeleton postures continuously in real …

In this article we describe a new approach to enhance presence technologies. First, we
discuss the strong relationship between cognitive processes and emotions and how human …

It can be argued that intelligence lies as much in the ability to sense the environment as in
the ability to reason. Increasingly, the Moore's law effect is not only giving us more …

Opportunistic sensing can be used to obtain data from sensors that just happen to be
present in the user's surroundings. By harnessing these opportunistic sensor configurations …

Here, we provide an overview of the content of the Special Issue on “Human-computer
interaction in smart environments”. The aim of this Special Issue is to highlight technologies …

Bio-sensing wearables are currently advancing to provide users with a lot of information
about their physiological and affective states. However, relatively little is known about users' …