Owing to the difficulties in extracting iris edge image, a new iris location algorithm using geometric symmetry feature and edge detection from gray scale image is presented.
针对虹膜二值边缘图像提取的困难，提出利用虹膜图像的灰度边缘图像以及虹膜的几何特征进行虹膜定位的快速算法。
Then with the characteristics of symmetry of the eyes some of the geometric characteristics are adopted for correction .
几何特征的加入使得小样本训练的粗分类器的应用成为现实，提高了眼睛检测的精度。
Symmetry plane extraction is very important to the geometric model reconstruction of an object in reverse engineering.
在反求工程中，对称面提取对于点云的几何模型重建具有重要意义。
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