遮挡条件下瞳孔精确检测方法

针对人眼图像的瞳孔提取中光源反光、睫毛、眼皮等干扰问题,提出了一种在眼皮部分遮挡下的瞳孔检测方法.该方法首先在瞳孔分割的基础上,通过滤波和扫描线法去除光源反光的影响.然后根据眼皮遮挡瞳孔的分界线进行旋转,利用内接平行四边形法确定瞳孔中心,通过五点法恢复出遮挡的瞳孔椭圆边界.实验结果表明,提出的方法在遮挡不超过瞳孔面积一半的情况下,能得到较为精确的瞳孔位置和边界,具有良好的鲁棒性和准确性.

The Pupil Diameter Precise Measurement Under Occlusion

There are some interferences caused by reflections,eyelashes and eyelids in pupil extraction.In order to solve these problems,a new method of pupil measurement under eyelid occlusion is presented.It removes reflections by filtering and Sweepline based on pupil segmentation.The center of the pupil is determined using inscribed parallelogram after rotating according to the dividing line for the eyelid.Then,the ellipse boundary of pupil is recovered through the five-point method.In the case of occlusion no mor...