摘要
简单有效的投影函数广泛用于眼睛定位中,然而成像产生的反光亮点降低了该方法的准确率,为此提出一种正面人脸图像中眼睛定位的算法.考虑到反光亮点对成像的影响,首先定义了3种眼睛成像模型,分析了每个模型的投影曲线特点;然后针对每个模型给出了相应的定位方法;最后综合上述3种模型提出了统一的定位算法.利用标准模型的投影曲线可近似为对称抛物线型的特点来降低亮点对眼睛定位精度的影响.实验结果表明,利用文中算法能够准确地定位眼睛的位置,准确率大于93%.
Projection function is widely used in eye detection for its simplicity and effectivity; however, the specular spots caused by light reflection reduce its accurate detection rate. This paper presents an eye locating algorithm for frontal-view face image to solve this problem. Considering the specular spots in the images, firstly, three eye imaging models are defined and their projection curves are analyzed. Secondly, the detection method for each model is described. Finally, these three models are combined and a unified detection algorithm is proposed. As the shape of standard model＇s projection curve is symmetric parabola, it is utilized to eliminate the specular spots＇ influence. Experimental results show that our method can accurately detect eye positions, and the accurate detection rate is over 93%.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2009年第6期763-769,共7页
Journal of Computer-Aided Design & Computer Graphics
基金
国家"八六三"高技术研究发展计划(2007AA01Z341)
关键词
眼睛定位
投影函数
眼睛成像模型
eye localization
projection function
eye imaging model
