Bases on the analysis of dead codes appearance, the factors that have effect on the data-flow analysis associated with the dead codes detection are discussed in this paper.

在对无用代码的表现形式进行分析的基础上，对影响无用代码检测所要进行的数据流分析的各种因素进行了讨论。

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Putting forward the change detection flow of areal ground features based on vector map data.

提出基于地图矢量数据面状地物变化检测的流程。

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System consists of three parts, according to data flow in the order, respectively video capture module, face detection and localization module and face recognition module.

系统分为三部分，按数据流程的先后顺序，分别是视频采集模块、人脸检测和定位模块及人脸识别模块。

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