The accuracy and the speed of iris boundary localization affect recognition system performance.
虹膜边界定位精度和定位速度影响识别系统性能。
Because the position and the size of irises in images are not fixed, these reasons result in that the computing burden increases and the iris boundary localization is slow.
虹膜在图像中的位置和大小不固定，这使得虹膜边界定位计算量大，定位速度慢。
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