通常一个典型的虹膜识别系统包括虹膜成像、活体检测和虹膜识别，本文把重点放在最后一部分。
In general, a typical iris recognition system includes iris imaging, iris liveness detection, and recognition and this paper focuses on the last issue.
由于传统时域点扫描方式的OCT系统的成像速度慢，难以用于活体的实时成像。
The imaging speed of traditional time-domain-scanning of OCT system is slow and difficult to meet the requirement of real-time imaging for living tissue.
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