对传统的特征脸方法进行改进，可以提高人脸正确识别率、缩短识别时间。

Modify the Eigenfaces method can improve the face correct recognition rate and reduce the recognition time.

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通过选择参考脸和最相似人脸的数目，可大致控制不同规模数据库的识别时间。

Through selecting the number of reference faces and the mostly expected similar face set, the recognition time for different scales of databases can be controlled approximately.

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对“准tdma”同步模式下的识别时间进行了研究，建立了识别时间的数学模型。

A mathematical model is set up respectively for the identification time of the pure ALOHA and the "quasi-TDMA".

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