VC++数字图像边缘检测算法研究与实现
图像的边缘是图像最基本的特征，它是灰度不连续的结果。图像分析和理解的第一步是边缘检测，因此边缘检测在图像处理中有着重要的作用。图像边缘检测大幅度地减少了数据量，并且剔除了可以认为不相关的信息，保留了图像重要的结构属性。
本课题用VC++实现了五种经典图像边缘检测算子,并且比较了它们的检测效果,分析各算子的特点,对学习边缘检测和具体工程应用具有很好的参考价值。
关键词: 图像处理,边缘检测, 算子，VC++
毕业设计说明书（论文）外文摘要
Title Comparison And Analysis For Image Edge
Detection Algorithms Based On VC
Abstract
Image contains a human need to perceive the world, and know the world, transforming the world most of the information quantity. Image processing of image information processing, to meet people's visual psychological and the requirement in practical application, image understanding, recognition of the target in the image is the central task of computer vision image processing.
Edge is the most basic feature of the images, it is the result of discontinuous gray. The first step in image analysis and understanding is edge detection, so edge detection plays an important role in image processing. Image edge detection significantly reduces the amount of data and removes irrelevant information, retains the important structural properties of images.
Five types of classical edge detection operators are realized by using VC++ in this thesis.Then the detection effects are compared and characteristics of the operators are analysed. This has reference value for the study of edge detection and specific applications.
Key Words: Image processing, Edge detection, Operator, VC++
目录
1 绪论 6
1.1数字图像基础 6
1.1.1数字图像概述 6
1.1.2数字图像处理 6
1.2边缘检测介绍 7
2 图像边缘检测 8
2.1边缘检测 8
2.1.1边缘检测概念 8
2.1.2微分算子 8
2.2边缘检测基本思想 9
2.3边缘检测算法 10
2.3.1边缘检测算法步骤 10
2.3.2边缘检测算法流程图 10
2.4边缘检测算法中算子的分类 11
2.5经典边缘检测算子 12
2.5.1 Roberts边缘检测算子 12
2.5.2 Sobel边缘检测算子 12
2.5.3 Prewitt边缘检测算子 14
2.5.4 Laplacian算子 14
2.5.5 Canny算子 15
3 Visual C++图像编程 15
3.1 Visual C++概述 15
3.2 VC++的特点 16
3.3 VC++的组成 16
4.边缘检测算子的编程实现 19
4.1程序运行界面 19
4.2 Roberts算子程序及结果 19
4.3 Sobel算子程序及结果 22
4.4 Prewitt算子程序及结果 26
4.5 Laplacian算子程序及结果 30
4.6 Canny算子程序及结果 33
4.7结果分析与比较 35
结 论 39