系统包括四个模块：人体识别模块、图像压缩模块、文件管理模块、以及人机接口模块。

It involves man-machine communication module, human detection module, JPEG image compress module and file management module.

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最后，从软件工程和人体工程学的角度出发，详细阐述了系统人机接口的设计与实现过程。

At last, we describe the designation and realization of the system's human computer interface on consideration of software engineering and ergonomics.

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