In this work, we investigate eye movement analysis as a new sensing modality for activity recognition. Eye data were recorded using an electrooculography (EOG) system. We first describe and evaluate algorithms detecting three characteristics from EOG signals-saccades, fixations, blinks-and propose method assessing repetitive patterns of movements. then devise 90 different features based on these select subset them minimum redundancy maximum relevance (mRMR) feature selection. validate the...

Experiencing Virtual Reality in domestic and other uncontrolled settings is challenging due to the presence of physical objects furniture that are not usually defined Environment. To address this challenge, we explore concept Substitutional context Reality: a class Environments where every object surrounding user paired, with some degree discrepancy, virtual counterpart. We present model potential substitutions validate it two studies. In first study investigated factors affect participants'...

A challenge in facilitating spontaneous mobile interactions is to provide pairing methods that are both intuitive and secure. Simultaneous shaking proposed as a novel easy-to-use mechanism for of small devices. The underlying principle use common movement secret the involved devices share mutual authentication. We present two concrete methods, ShaVe ShaCK, which sensing analysis combined with cryptographic protocols secure based on initial key exchange followed by comparison sensor data...

Although gaze is an attractive modality for pervasive interactions, the real-world implementation of eye-based interfaces poses significant challenges, such as calibration. We present Pursuits, innovative interaction technique that enables truly spontaneous with interfaces. A user can simply walk up to screen and readily interact moving targets. Instead being based on location, Pursuits correlates eye pursuit movements objects dynamically interface. evaluate influence target speed, number...

Virtual reality affords experimentation with human abilities beyond what's possible in the real world, toward novel senses of interaction. In many interactions, eyes naturally point at objects interest while hands skilfully manipulate 3D space. We explore a particular combination for virtual reality, Gaze + Pinch interaction technique. It integrates eye gaze to select targets, and indirect freehand gestures them. This keeps gesture use intuitive like direct physical manipulation, but...

We introduce Orbits, a novel gaze interaction technique that enables hands-free input on smart watches. The relies moving controls to leverage the smooth pursuit movements of eyes and detect whether at which control user is looking at. In include targets move in circular trajectory face watch, can be selected by following desired one for small amount time. conducted two studies assess technique's recognition robustness, demonstrated how Orbits robust against false positives triggered natural...

As this overview of products and projects shows, preinstalled location systems, wireless sensor networks, inertial sensing all have benefits drawbacks when considering emergency response requirements.

Current research on eye-based interfaces mostly focuses stationary settings. However, advances in mobile eye-tracking equipment and automated eye-movement analysis now allow for investigating eye movements during natural behavior promise to bring interaction into people's everyday lives. Recent developments tracking point the way toward unobtrusive human-computer that will become pervasively usable life. The potential applications further capability track analyze anywhere anytime calls new...

The authors discuss the problems in creating next generation of widely deployed ubiquitous computing systems and articulate current technical sociological challenges to inspire researchers field. They significant research that have yet be addressed. Central documenting these is recognizing context within which we are operating, so they first describe social changes 1990s directly affected then.

In this article, we introduce and evaluate a comprehensive set of performance metrics visualisations for continuous activity recognition (AR). We demonstrate how standard evaluation methods, often borrowed from related pattern problems, fail to capture common artefacts found in AR—specifically event fragmentation, merging timing offsets. support our assertion with an analysis on recently published AR papers. Building earlier initial work the topic, develop frame-based visualisation...

Personal fabrication machines, such as 3D printers and laser cutters, are becoming increasingly ubiquitous. However, designing objects for still requires modeling skills, thereby rendering technologies inaccessible to a wide user-group. In this paper, we introduce MixFab, mixed-reality environment personal that lowers the barrier users engage in fabrication. Users design an immersive augmented reality environment, interact with virtual direct gestural manner can existing physical...

Eye gaze is a compelling interaction modality but requires user calibration before can commence. State of the art procedures require to fixate on succession markers, task that often experienced as difficult and tedious. We present pursuit calibration, novel approach that, unlike existing methods, able detect user's attention target. This achieved by using moving targets, correlation eye movement target trajectory, implicitly exploiting smooth movement. Data for then only sampled when...

Research on activity recognition has traditionally focused discriminating between different activities, i.e. to predict which was performed at a specific point in time. The quality of executing an activity, the how (well), only received little attention so far, even though it potentially provides useful information for large variety applications. In this work we define execution and investigate three aspects that pertain qualitative recognition: specifying correct execution, detecting...

Humans perform gaze shifts naturally through a combination of eye, head and body movements. Although has been long studied as input modality for interaction, this previously ignored the coordination eyes, body. This article reports study in virtual reality aimed to address gap inform design. We identify general torso patterns provide an analysis relative movements’ contribution temporal alignment. quantify effects target distance, direction user posture, describe preferred eye-in-head motion...

Gaze has the potential to complement multi-touch for interaction on same surface. We present gaze-touch, a technique that combines two modalities based principle of 'gaze selects, touch manipulates'. is used select target, and coupled with gestures user can perform anywhere Gaze-touch enables users manipulate any target from position, whole-surface reachability rapid context switching. Conversely, gaze-touch manipulation position surface, example avoid occlusion. designed direct-touch as...

Eye gaze involves the coordination of eye and head movement to acquire targets, but existing approaches pointing are based on eye-tracking in abstraction from motion. We propose leverage synergetic head, identify design principles for Eye&Head interaction. introduce three novel techniques that build distinction head-supported versus eyes-only gaze, enable dynamic coupling pointer, hover interaction, visual exploration around pre-selections, iterative fast confirmation targets. demonstrate...

Background: There is increasing evidence that people in the early stages of Alzheimer's disease (AD) have subtle impairments cognitive inhibition can be detected by using relatively simple eye-tracking paradigms, but these are often missed traditional assessments.People with mild impairment (MCI) at an increased likelihood dementia due to AD.No study has yet investigated and contrasted MCI subtypes relation eye movement performance.Methods: In this work we explore whether distinguish between...