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基于Sobel算子的图像边缘检测研究
引用本文:袁春兰,熊宗龙,周雪花,彭小辉.基于Sobel算子的图像边缘检测研究[J].激光与红外,2009,39(1):85-87.
作者姓名:袁春兰  熊宗龙  周雪花  彭小辉
作者单位:1. 武汉理工大学,湖北武汉,430070
2. 华中科技大学,湖北武汉,430074;湖北省地震局,湖北武汉,430071
3. 通信指挥学院,湖北武汉,430010
摘    要:在图像处理中,提出了一种新的边缘检测算法,该算法首先对由Otsu算法所得图像进行形态学的去除孤立像素和闭运算操作,然后再用Sobel算子进行边缘检测,最后将所得图像与用Sobel算子直接对原始图像进行边缘检测的图像相加。最后用MATLAB对数字图像和红外图像都进行了仿真。仿真结果表明,该算法改善了单一的用Sobel算子检测对垂直与水平方向敏感,其他方向不敏感的不足,提高了Sobel边缘检测算子的性能,具有良好的检测精度。此算法不仅适用于数字图像还适用于红外图像。

关 键 词:图像处理  边缘检测  Sobel算子  Otsu算法

Study of Infrared Image Edge Detection Based on Sobel Operator
YUAN Chun-lan,XIONG Zong-long,ZHOU Xue-hu,PENG Xiao-hui.Study of Infrared Image Edge Detection Based on Sobel Operator[J].Laser & Infrared,2009,39(1):85-87.
Authors:YUAN Chun-lan  XIONG Zong-long  ZHOU Xue-hu  PENG Xiao-hui
Affiliation:1.Wuhan University of Technology;Wuhan 430070;2.HuZhong University of Science and Technology;Wuhan 430074;3.Earthquake Administration of Hubei Province;Wuhan 430071;4.Commanding Communications Academy;Wuhan 430010;China
Abstract:A new edge detection algorithm is proposed in the infrared image processing.The algorithm first wipes off Images which obtained by the Otsu algorithm isolated pixels and close operation.Then uses Sobel operator edge detection.Then,added the images obtained with the use Sobel operator directly to the original image for the edge detection images.Finally used MATLAB has carried on the simulation to the digital image and the infrared imagery.The simulation result indicated that the algorithm has improved Sobel operator only to vertical and horizontal direction sensitive,the other direction not sensitive.It can be demonstrated that the performance of the traditional Sobel detection operator is improved through the experiment t and the detection accuracy.And it is not only suitable for the digital image is also suitable for the infrared imagery.
Keywords:image processing  edge detection  sobel operator  otsu operator
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