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- 2016
可量测视频目标动态轨迹生成及GIS应用
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Abstract:
动态目标三维重建是进一步实现目标地理信息时空分析、目标统计、目标查询、异常报警及各种空间数据挖掘应用的重要基础。利用计算机视觉技术将摄像头中目标框的二维像坐标信息实时动态还原成三维物方目标信息,采用基于物方特征域的模式分类方法,通过目标物方尺寸、目标出现的物方位置进行更准确的目标筛查,提高了目标跟踪的准确性,降低了虚警;通过地平面约束实现单目目标立体定位,增加了立体定位的场景覆盖范围;进而把以帧为单位的视频数据解析成为以目标轨迹为单位的空间三维地理对象信息,并将生成的时空轨迹图层集成到地理信息系统,实现了基于地理信息空间分布的视频时空数据管理
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