基于PCA变换扩散投影的人眼轮廓提取  

Eye contour extraction using PCA transform scattering projection

作　　者：刘秋菊[1] 徐汀荣[1] 王琼[2] 

机构地区：[1]苏州大学计算机科学与技术学院,江苏苏州215006 [2]常熟理工学院信息化办公室,江苏常熟215500

出　　处：《计算机工程与设计》2009年第24期5695-5697,5704,共4页Computer Engineering and Design

摘　　要：提出一种PCA变换扩散投影的人眼轮廓提取方法(PCA transform scattering projection,PCATSP),即采用PCA投影对人眼的虹膜进行定位,经在人眼区域内对形状点进行变换后对所得参数进行扩散投影,并结合霍夫变换进行整体处理,从而实现更为鲁棒地提取人眼轮廓。实验中通过与可变形模板法相比较,结果表明PCATSP在平均形状参数误差及整体优化时间上更能精确地提取人眼轮廓,并取得令人满意的效果。A new eye contour extraction method using PCA transform scattering projection-PCATSP（PCA transform scattering projec-tion） is proposed.The PCA projection for positioning iris is used,and then we transform the points of shape by utilizing the transform scattering projection.In the end,we used the PCA transform scattering projection for the parameters transformed,combined with an overall deal with Hough transform,so as to achieve more robust eye contour extraction.Experimental results show PCATSP is more ro-bustly compared to deformable template for eye contour extraction in the shape of an average error of the parameters and optimizing the overall time.

关 键 词：人眼轮廓提取 PCA投影 变换扩散投影 可变形模板 参数误差 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]