基于图像的边缘检测算法研究
毕业论文关键词： 数字图像；边缘检测；图像处理；canny算子；Sobel算子
The research on image edge detection algorithm
Abstract: With the development of computer technology ,digital image techniques have been widely used in modern science and technology area.Edge detection techniques is the most basic and the most important part in digital image techniques. It also the hot issue of image processing techniques.This paper introduces the basic concepts of edge detection techniques.And it shows the main areas of application of edge detection technology and its future trends. It clearly tells us the research background, significance and specific steps about edge detection techniques.To have a better understanding of edge detection algorithm， I analyzed the basic theoretical knowledge of some classical edge detection algorithm such as sobel operator, robert operator, prewitt operator, robert operator, log operator and canny operator. To analyze the every operators by using the traditional method to detect the edge of the image which is added noise and to filter the image. Understanding of the advantages and disadvantages of each operator and applicability, and thus completed the research on digital image edge detection algorithm.
Keywords: Digital image; Edge detection; Image processing; Canny operator; Sobel operator
目录
摘要 i
Abstract i
目录 iii
1 绪论 1
1.1 国内外研究现状与水平 2
2 算法的分析和数学原理 4
2.1 相关概念 4
2.1.1 数字图像 4
2.1.2 数字图像边缘 5
2.1.3 图像分割 5
2.1.4 边缘检测 5
2.2 基本理论 6
2.3 边缘检测方法 7
2.4 边缘提取方法 8
2.5 基于一阶导数边缘检测算子 9
2.5.1 Roberts算子 10
2.5.2 Sobel算子 11
2.5.3 Prewitt算子 12
2.6 线性滤波边缘检测算子 12
2.6.1 LOG算子 13
2.6.2 Canny算子 14
3 实验结果分析 18
3.1 实验软件 18
3.2 代码 19
3.3 边缘检测算法性能分析 19
3.3.1 在无噪声的情况下 19
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