Setting virtual-loop sensor along the vertical direction of the road to detect vehicle flow. Only the image data within the virtual-loops are processed, so the time cost of calculation is reduced and fast processing speed.
沿垂直于道路方向设置虚拟检测器来统计车流量,系统只处理检测器区域内的数据,运算量小,速度快。
参考来源 - 基于视频的车辆检测与流量统计方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
联想同时发布了一个内置激光投影仪与红外运动检测器的智能手机项目，能将手机屏幕通过投影转变成一个巨大的虚拟触摸屏。
It also unveiled plans for a smartphone with a built-in laser projector and infrared motion detector that is capable of projecting what is, in effect, a giant touch screen.
针对于传统的地埋线圈检测器检测技术，本文给出了一种基于视频图像的虚拟线圈检测方法，并在实际应用中取得很好的效果。
A pre-procession method to extract the vehicle feature was presented in this paper, which combined the detection line and virtual loops.
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