Johannes Vockeroth

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The prototype of a gaze-controlled, head-mounted camera (EyeSeeCam) was developed that provides the functionality for fundamental studies on human gaze behavior even under dynamic conditions like locomotion. EyeSeeCam incorporates active visual exploration by saccades with image stabilization during head, object, and surround motion just as occurs in human(More)
During free exploration, humans adjust their gaze by combining body, head, and eye movements. Laboratory experiments on the stimulus features driving gaze, however, typically focus on eye-in-head movements, use potentially biased stimuli, and restrict the field of view. Our novel wearable eye-tracking system (EyeSeeCam) overcomes these limitations. We(More)
BACKGROUND Workload assessment is an important tool for improving patient safety in anaesthesia. We tested the hypothesis that heart rate, pupil size, and duration of fixation increase, whereas saccade amplitude decreases with increased workload during simulated critical incidents. METHODS Fifteen trainee anaesthetists participated in this randomized(More)
—Remote eye tracking systems are widely used evaluation tools in many disciplines. Such systems have to deal with free head motions that cause a defocussing of the camera image. Hence, remote eye tracking systems usually have a limited operating range. This contribution presents a novel auto-focus setup for a small and mobile remote gaze tracking system(More)
Humans adjust gaze by eye, head, and body movements. Certain stimulus properties are therefore elevated at the gaze center, but the relative contribution of eye-in-head and head-in-world movements to this selection process is unknown. Gaze- and head-centered videos recorded with a wearable device (EyeSeeCam) during free exploration are reanalyzed with(More)
Eye, head, and body movements jointly control the direction of gaze and the stability of retinal images in most mammalian species. The contribution of the individual movement components, however, will largely depend on the ecological niche the animal occupies and the layout of the animal's retina, in particular its photoreceptor density distribution. Here(More)
— Head mounted cameras are well known and widely used in the fields of documentary movies and augmented reality. When combined with an eye tracker, these cameras can emphasize the point of gaze within a picture of a whole scene. A gaze-driven, head-fixed camera was recently described, with witch it is possible to capture pictures viewed by the eyes. The(More)
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