Then the functions of this system are explained, which include data preprocessing, the outgo route analysis of the tour consumer, the consumeability of the tourism consumer.

介绍了系统的主要功能：数据预处理、旅游消费者出行路线分析以及消费者消费能力分析；

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The key functions of this system according to its processing steps are discussed: image digitalization, image preprocessing, information acquisition and feature extraction of specific information.

按图像数字化、图像预处理、获取图像信息以及特征信息处理和提取四个处理步骤，对各自涉及的关键技术进行了探讨。

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Paper introduces the designations of system circuitry, functions, images acquisition circuits and data preprocessing algorithm and processing flowchart in details.

论文详细介绍了系统电路结构设计、功能设计、图像采集电路的实现，以及指纹预处理算法的处理流程和实现方法。

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