摘要基于视频图像的实时监控有着广泛的应用，实时监控输液速度可以大大减轻人 员负担。本文主要研究基于视频图像的输液速度实时监测。应用 MATLAB 工具对输 液视频信号进行分帧、灰度化、帧间差分、二值化处理，统计得到像素点变化曲线， 论文对上述各过程进行了编程实现，并深入分析阈值影响，研究了最大类间方差法， 分析了液滴下落过程中像素点变化特征，对像素点变化曲线进行判断，由此获得液 滴速度，并分析了影响液滴速度精度的因素。68448

毕业论文关键词 静脉输液 预处理 帧间差分 二值化

itle      Technology of Droplet Velocity Detection Based on Video Image

Abstract

Based on real-time monitoring of video images has been widely applied, real-time monitoring of the infusion rate can greatly reduce the burden on staff. In this paper, based on real-time video images of the infusion rate monitoring. Application MATLAB tools infusion video signal sub-frame, gray, frame difference, binarization processing, statistical curves obtained pixels, the paper above the programming process, and in-depth analysis of the impact threshold, the largest study between-class variance method to analyze the variation of pixel droplets falling process, the judge pixels curve, thereby obtaining droplet velocity, and analyzes the factors that affect droplet velocity accuracy.

eywords intravenous infusion pretreatment infusion rate

目次

1 绪论 1

1.1 课题背景及意义 1

1.2 课题研究现状和发展 1

1.3 论文的研究内容及章节安排 3

2 图像预处理 4

2.1 设计研究的工具环境 4

2.2 视频取帧 5

2.2.1 视频取帧简介 6

2.2.2 程序编程及仿真结果 7

2.3 图像灰度变换 9

2.3.1 灰度化概念 9

2.3.2 程序编程及仿真结果 10

3 运动目标检测 13

3.1 帧间差分法 13

3.1.1 帧间差分法简介 13

3.1.2 实现方法 14

3.1.3 程序编程及仿真结果 14

3.1.4 本节小结 16

3.2 二值法 16

3.2.1