摘要
以检测羁押场所在押人员撞墙行为为例,总结研究了在押人员特殊行为的检测方法。利用开源工具OpenCV编写C++应用程序,采用帧差法提取运动目标轮廓,并对目标轮廓进行图像形态学处理、图像增强处理。再根据帧图像在视频序列中产生的差分图像,对视频目标中的运动目标进行运动历史图像的分析处理,进而掌握运动目标体的全局运动质心和运动方向。最后研究质心在一定周期、坐标空间内的运动规律,让计算机程序将视频中存在撞墙行为的位置检测出来,实现视频检索。
The detainees special behavior detection method by taking the example of the detection of the behavior which against the wall in prison is reasearched. It uses open source tools OpenCV to program C＋ ＋ application in order to extracte moving object silhouette by frame difference method, mor- phological process the images, enhance the images, analyze the motion histroy in image,and gain the motion centroid with its direction. Finally,it achieves video retrieval by detecting the behavior of against the wall in video after analysing the law of motion of the study centroid in a certain cycle ,within the coordinate space.
出处
《电视技术》
北大核心
2013年第7期174-178,共5页
Video Engineering
关键词
撞墙行为
帧差法
运动历史图像
质心
视频检索
behavior which against the wall
frame difference method
motion history image
centroid
video retrieval
