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眼部特征自动检测定位方法

, PP. 1717-1723

Keywords: 信息处理技术,人脸识别,可变形模板,虹膜定位,眼角检测

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Abstract:

为了准确地提取眼部特征,提出了一种人眼虹膜检测及眼角定位的新方法。首先用AdaBoost算法在复杂背景下识别人脸,再用方差积分投影方法提取眼睛区域。然后设计了可变形圆形模板,利用可变形圆形模板及改进的优化匹配函数来确定虹膜中心及计算虹膜半径,并在此基础上根据眼睛的结构特征,用设计的线形模板计算内外眼角相对虹膜中心的角度方向,并在该方向下用Harris角点检测算法确定眼角最佳位置。最后,利用IMM人脸库验证了本方法,实验结果表明:本方法可以很好地对面部图像中的人眼虹膜及内外眼角进行准确定位。

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