基于Sobel算子的图像边缘检测研究
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Study of Infrared Image Edge Detection Based on Sobel Operator
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    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。

    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.

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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
YUAN Chun-lan, XIONG Zong-long, ZHOU Xue-hua, PENG Xiao-hui. Study of Infrared Image Edge Detection Based on Sobel Operator[J]. LASER & INFRARED,2009,39(1):85~87

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