一种快速精确的虹膜定位方法

A Fast and Exact Algorithm of Iris Location

为了提高虹膜定位的速度及精度,提出了一种粗定位,精定位与结果修正三步相结合的定位方法,用以进行虹膜定位,并对现有的虹膜定位算法进行了一些改进。实验结果表明,用三步法进行虹膜定位可以减少搜索计算的盲目性,加快定位速度,对不同虹膜图象定位结果的精度都有不同程度的提高。

A three-step location approach combining coarse location with fine location and result correction is presented,and an extant iris location algorithm is improved in order to fasten the speed of iris location and make the iris location more robust. Experiments show that the method has good performance of sub-pixel precision and uses less time compared with original iris location method. The three-step location approach can fasten location speed and decrease the blindness of search computation, and the improved iris location algorithm is reasonably more robust than original one.