Aiming at shortcomings of the traditional damage assessment model based on pixel-level change detection, this dissertation proposes a new model based on change target features vector analysis.

针对传统的基于像素级变化检测的打击效果评估系统的不足，提出了基于变化目标特征向量分析的打击效果评估系统。

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Vector data require far less storage than raster data because arc node lists simplify and reduce the data required to make sense of the features contained in the map.

矢量数据要求的存储要比栅格数据少得多，因为弧节点列表简化并减少了表示地图中包含的特征所需的数据。

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It is primarily a vector graphics language, though some raster graphics features are available.

它主要是一种矢量图形语言，但是可以使用某些光栅图形特性。

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It claims the software creates a virtual topographical map of your features, which is then measured against the donor database, looking for similar surface textures, vector templating and, of course size of features.

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So if HTML5 is more suitable for light interface enhancements, this leaves rooms for Flash to do what it does best: heavy interface enhancements, vector-based animations, advanced video and audio features, and immersive environments.

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We launched Maps initially with the first version of iOS. As time progressed, we wanted to provide our customers with even better Maps including features such as turn-by-turn directions, voice integration, Flyover and vector-based maps.

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