68 research outputs found
Understanding face and eye visibility in front-facing cameras of smartphones used in the wild
Commodity mobile devices are now equipped with high-resolution front-facing cameras, allowing applications in biometrics (e.g., FaceID in the iPhone X), facial expression analysis, or gaze interaction. However, it is unknown how often users hold devices in a way that allows capturing their face or eyes, and how this impacts detection accuracy. We collected 25,726 in-the-wild photos, taken from the front-facing camera of smartphones as well as associated application usage logs. We found that the full face is visible about 29% of the time, and that in most cases the face is only partially visible. Furthermore, we identified an influence of users' current activity; for example, when watching videos, the eyes but not the entire face are visible 75% of the time in our dataset. We found that a state-of-the-art face detection algorithm performs poorly against photos taken from front-facing cameras. We discuss how these findings impact mobile applications that leverage face and eye detection, and derive practical implications to address state-of-the art's limitations
The “Aachen fall prevention App” – a Smartphone application app for the self-assessment of elderly patients at risk for ground level falls
Proprioception in the age-related design of handheld devices - a cognitive ergonomic approach
Proprioception in the age-related design of handheld devices - a cognitive ergonomic approach
How Do Users Interact with Mobile Devices? : An Analysis of Handheld Positions for Different Technology Generations
Themenschwerpunkt aus dem Projekt Tech4P: Serviceroboter. Untersuchung zur räumlichen Annäherung von Servicerobotern in der Mensch-Roboter-Interaktion
Altersdifferenzierte Analyse des Handproximitätseffektes bei der Mensch-Computer-Interaktion
Themenschwerpunkt aus dem Projekt Tech4P: Serviceroboter. Untersuchung zur räumlichen Annäherung von Servicerobotern in der Mensch-Roboter-Interaktion
Usability of Document Management Systems Considering Users' Level of Experience : a Survey
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