摘要现如今，视频信息充斥生活的诸多方面，视觉信息已经比其他渠道获取的信息重要许多，重要性超越以往。基于视频中运动目标跟踪与侦测在MATLAB平台上已经可以完美实现。获取信息后将视觉信息转化为人工智能已成为一个重要的研究方向。日常生活中，精度不高的视觉信息会对日常生活产生极大的不便。因此，在关键地点加装视频运动目标采集系统就显得尤其重要。
视频中的目标检测是在人机交互领域极其重要的一个环节，目的即是将所选择目标从视频背景之中提取，并加以计算其轨迹，从而得出相关结论。在目标提取阶段，有几个因素可能会对这一过程产生影响，如：云雾、光照方向、目标的拖影等，以至于视频中运动目标的提取难度加大。
对于以上情况，大多数研究者在运动物体检测以及运动物体追踪领域主要应对方法有两种：一是对视频进行处理得到视频中所标记的目标的连续图像；二是利用人工智能神经网络对图像目标进行直接的追踪。二者相比，前者较易被大众接受且便于实现，能够高效得到目标轨迹。现在较为普遍的方法有背景减法、邻帧差法和光流法。25502
关键词  目标检测  目标提取  背景相减法
毕业论文设计说明书外文摘要
Title  Video moving target extraction  
Abstract
Nowadays,visual information is full of many aspects of life,the visual information has became more and more important than other information channels. Moving target tracking and detection can be achieved based on MATLAB. Get information into artificial intelligence has become an important research direction.Low Accuracy visual information would have a significant inconvenience in daily life.Therefore,install video moving target acquisition system in the key locations is especially important.
Video target detection in the field of human-computer interaction is an extremely important aspect, the purpose of it is tell out the selected target from among video background extraction,and calculate its trajectory,then comes out conclusions. In the object extraction stage, there are several factors that could have an impact on this process, such as: clouds, light direction, goals smear, etc. so that the difficulty of extracting the video moving target increases.
For the above, there are two ways that most researchers in moving object detection and tracking moving objects use in the research: First, the video is processed to obtain a moving image; the second is the use of artificial neural network image directly target tracking. Compared the two ways, the former is easier to be accepted by the public and easy to implement, and can efficiently obtain the target trajectory. Now,common methods are background subtraction, adjacent frame difference and optical flow.
Keywords  Target Detection    Object Extraction     Background subtraction
目   次
摘要I
AbstractII
1  绪论 1
1.2 课题的研究背景及意义 1
1.3 国内外研究概况…2
1.3.1 背景差法…2
1.3.2 邻帧差法2
1.3.3 光流法…3
1.4 论文的研究内容及安排4
2 视频中运动目标追踪研究5
2.1 引言5
2.2 静态背景下运动目标的侦测算法研究 5
2.2.1 经典边缘提取检测5
2.2.2 微分算子6
2.2.3 Canny算子…7
2.3 运动目标分割7
2.3.1 图像差分法8
2.3.2 背景差分法9
2.4 Kalman滤波器9
2.5 本章小结10
3 运动目标跟踪方法研究 11
3.1 搜索算法的介绍 11
3.1.1 绝对平衡搜索法（ABS）… 11
3.1.2 归一化互相关匹配算法（NC）… 12
3.1.3 均值偏移算法原理…12
3.2 运动目标方向性判断 12 MATLAB视频中运动目标的提取方法研究:http://www.youerw.com/wuli/lunwen_19319.html