文档介绍：上海交通大学
硕士学位论文
图像处理技术在客流统计系统中的应用及研究
姓名:罗培全
申请学位级别:硕士
专业:控制理论与控制工程
指导教师:范启富
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上海交通大学硕士学位论文

图像处理技术在客流统计系统中的应用及研究
摘要
客流统计系统是研究智能交通的一个子系统典型的客流统计系统有几
种有基于压力踏板式的有基于红外传感技术的本文提出使用图像处
理技术来统计客流是一种探索对以后开发准确实时的客流统计系统有
着重要的现实意义
本文主要对动态图像进行处理包括图像的预处理图像分割运动目
标检测目标的跟踪和计数根据乘客计数系统的实际情况论证了在实
验室模拟实际场景的可行性
首先图像分割由于序列图像和背景差分后得到的图像的直方图没
有明显的双峰比较难得到一个合适的阈值来分割图像因此提出熵的理
论用最大熵理论确定分割阈值
然后运动目标检测检测运动目标的方法有差分法和光流法本文采
用了差分法并给出差分法原理实现步骤等
最后是目标的跟踪和计数本文提出用目标的质心目标灰度值和包围
窗口的大小这两个参数构造了代价函数进行目标的跟踪得到良好的
跟踪效果同时由于自动计数系统只关心目标个数本文采用了简单的差
分法并给出两种方法的实验结果并比较了它们的差异
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上海交通大学硕士学位论文
希望本论文的研究工作能为基于图像处理的客流统计系统设计提供一
些有用的信息

关键词智能公交客流统计图像处理识别差分图像
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上海交通大学硕士学位论文

APPLICATION AND STUDY ON DIGITAL IMAGE
PROCESSING USED IN ATUOMATIC PASSENGE
COUNTING SYSTEM

ABSTRACT

To study Automatic Passenger Counter (APC) is the purpose of this article.
APC is a sub-system of Intelligent Transport System. There are several kind of
APC, such as APC based on pressure footplate, APC based on infrared ray. The
technology of image processing is an advanced way to counter passenger. It is
useful to research the technology of image processing for APC.
APC based on image processing is really Mufti-object recognition and
counting dynamic image. It includes preprocessing, division, detection, tracking
and counting. It is reasonable to simulate real environment for the background is
stable during counting.
First, the image division is required. The rule must to obey is to choose the
way in which the target can be divided from background.
Second, detection is to deal in a few ways, such as, based on difference
background, based on difference between two images and light flow. Because of
no two distinct peaks in the histogram for the intensity image when using the
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上海交通大学硕士学位论文
difference between the background and the images, it is hard to find a suitable
thresh value. Since that, the entropy is used. The difference image betw