نتایج جستجو برای: camera without gaze
تعداد نتایج: 859979 فیلتر نتایج به سال:
Gaze analysis has gained much popularity over the years due to its relevance in a wide array of applications, including humancomputer interaction, fatigue detection, and clinical mental health diagnosis. However, accurate gaze estimation from low resolution images outside of the lab (in the wild) still proves to be a challenging task. The new Intel low-cost RealSense 3D camera, capable of acqui...
In a past eye-gaze detection systems, users must attach a camera on the head or keep still in front of camera, to obtain zoomed image of their eye region. In this paper, we propose a flexible gaze detection method using single PTZ (Pan-Tilt-Zoom) camera. In this method, PTZ camera traces user’s face and measures position of their viewing point, so they do not need to fix their head in front of ...
Gaze estimation error is inherent in head-mounted eye trackers and seriously impacts performance, usability, and user experience of gaze-based interfaces. Particularly in mobile settings, this error varies constantly as users move in front and look at different parts of a display. We envision a new class of gaze-based interfaces that are aware of the gaze estimation error and adapt to it in rea...
Investigation of eye movement strategies often requires the measurement of gaze orientation without restraining the head. However, most commercial eye-trackers have low tolerance for head movements. Here we present a novel geometry-based method to estimate gaze orientation in space in unrestricted head conditions. The method combines the measurement of eye-in-head orientation-provided by a head...
This paper proposes an algorithm to estimate gaze direction without on-site calibration even when the position of the head relative to the camera moves. We define eye direction as geometrical direction of the eyeball and gaze direction as long fixed looking detection in this paper. In the algorithm to detect the eye direction, a cornea curvature center is detected based on a relation model betw...
Automatic camera control aims to define a framework to control virtual camera movements in dynamic and unpredictable virtual environments while ensuring a set of desired visual properties. We investigate the relationship between camera placement and playing behaviour in games and build a user model of the camera behaviour that can be used to control camera movements based on player preferences....
Cross-ratio (CR)-based eye tracking has been attracting much interest due to its simple setup, yet its accuracy is lower than that of the model-based approaches. In order to improve the estimation accuracy, a multi-camera setup can be exploited rather than the traditional single camera systems. The overall gaze point can be computed by fusion of available gaze information from all cameras. This...
i Summary Active vision systems have mechanisms that can actively control camera parameters such as position, orientation, focus, zoom, aperture and vergence (in a two camera system) in response to the requirements of the task and external stimuli. They may also have features such as spatially variant (foveal) sensors. More broadly, active vision encompasses attention, selective sensing in spac...
In this paper, we propose a new gaze estimation method by analyzing the cornea surface model which is estimated through three dimensional analysis of human eye in HMD (Head Mounted Display) environments. This paper has four advantages over previous works. First, in order to obtain accurate gaze position, we use a cornea sphere model based on Gullstrand eye scheme. Second, we calculate the 3D po...
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