EyeSeeCam: An Eye Movement-Driven Head Camera for the Examination of Natural Visual Exploration
EyeSeeCam: An Eye Movement-Driven Head Camera for the Examination of Natural Visual Exploration
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DOI：
10.1111/j.1749-6632.2009.03858.x
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发表时间：
2009-01-01
期刊：
影响因子：
--
通讯作者：
Brandt, Thomas
中科院分区：
文献类型：
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作者：
Schneider, Erich;Villgrattner, Thomas;Brandt, Thomas
开发了一种凝视控制的头戴式摄像机（EyeSeeCam）的原型，该原型为人类凝视行为的基础研究提供了功能，即使在运动等动态条件下也是如此。EyeSeeCam结合了积极的视觉探索扫视与图像稳定期间的头部，对象，和环绕运动，就像发生在人类的眼睛运动控制。这个原型是第一次尝试结合联合收割机自由用户移动性与图像稳定和不受限制的探索的视觉环境中的人造技术视觉系统。凝视驱动摄像机由一个额外的广角、头部固定场景摄像机补充。在该场景视图中，聚焦凝视视图嵌入有画中画功能，其提供了对中央凹视网膜内容的近似。这样的组合视频剪辑可以比单独的凝视相机的扫视遍布的图像更舒适地观看。EyeSeeCam由视频眼电（VOG）设备和摄像机运动设备组成。用于评估这种设备的基准是前庭眼反射（VOR），其需要头部和眼睛（相机）移动之间的大约10毫秒的延迟以用于适当的图像稳定。开发了一种新的轻量级VOG，能够以高达600 Hz的频率同步测量双眼位置。摄像机运动装置由一个并联运动学装置组成，该装置具有一个无间隙万向节接头，该万向节接头由无减速齿轮的压电致动器驱动。结果，人造眼睛和相机的旋转之间的延迟为10毫秒，这是类似于VOR。
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 ocular motor control. This prototype is a first attempt to combine free user mobility with image stabilization and unrestricted exploration of the visual surround in a man-made technical vision system. The gaze-driven camera is supplemented by an additional wide-angle, head-fixed scene camera. In this scene view, the focused gaze view is embedded with picture-in-picture functionality, which provides an approximation of the foveated retinal content. Such a combined video clip can be viewed more comfortably than the saccade-pervaded image of the gaze camera alone. EyeSeeCam consists of a video-oculography (VOG) device and a camera motion device. The benchmark for the evaluation of such a device is the vestibulo-ocular reflex (VOR), which requires a latency on the order of 10 msec between head and eye (camera) movements for proper image stabilization. A new lightweight VOG was developed that is able to synchronously measure binocular eye positions at up to 600 Hz. The camera motion device consists of a parallel kinematics setup with a backlash-free gimbal joint that is driven by piezo actuators with no reduction gears. As a result, the latency between the rotations of an artificial eye and the camera was 10 msec, which is VOR-like.