摘要
提出一种基于红外发光管的快速视点跟踪装置,解决目前视点跟踪技术的硬件开销大,提高响应速度慢的问题。通过控制红外发光管的明暗得到图像,并采用分水岭的方法进行灰度分割,得到关于瞳孔的边缘及其在面部的相对位置,算法复杂度低,可以得到很好的实时效果;将得到的被测者瞳孔的图像拟合成连续的曲线,根据瞳孔的边界位置、边界的斜率计算出瞳孔的中心位置。该方法计算简单,并可以判断当瞳孔部分被眼睑遮住时的瞳孔中心位置。该装置在需要快速反应的场合及便携式设备中能有效提高响应速度,解决目前视点跟踪技术的应用环境要求高及算法复杂度高的问题。
A method of fast gaze tracking device based on the infrared luminous tube is presanted. The target of the device is to solve the hardware cost of current gaze tracking technology and improve the speed of response. Through the control of the infrared luminous tube brightness, the images are obtained. And the watershed method is used to segment images. The edge of eyes and the relative position in the face are obtained. At the same time, the algorithm complexity is low, and the real-time is realized effect. The measured pupil edge in the image is synthe- sized in continuous curve according to the pupil boundary. And the boundary slope is calculated from the pupil cen- ter position. The method is simple in calculation, and the position of the pupil center can be judged when the pupil is eyelid cover. The device is rapid response to the occasion needed and the portable device can effectively improve the speed of response, solve the gaze tracking technology of environmental requirements and reduce the complexity of the algorithm.
出处
《科学技术与工程》
北大核心
2013年第11期3012-3015,共4页
Science Technology and Engineering
基金
国家自然科学基金(61271412)
江苏省高校自然科学研究面上项目(12KJB510011)
南京大学计算机软件新技术国家重点实验室资助(KFKT2012B20)
南京信息工程大学江苏省气象探测与信息处理重点实验室项目(KDXS1203)资助
关键词
红外发光管
快速视点跟踪
瞳孔中心
灰度分割
infrared light emitting diode fast gaze tracking pupil center image segmentation
