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一种基于Canny理论的自适应边缘检测方法
引用本文:王植,贺赛先.一种基于Canny理论的自适应边缘检测方法[J].中国图象图形学报,2004,9(8):957-962.
作者姓名:王植  贺赛先
作者单位:武汉大学电子信息学院测试计量技术与通讯工程重点实验室 武汉430079 (王植),武汉大学电子信息学院测试计量技术与通讯工程重点实验室 武汉430079(贺赛先)
摘    要:基于Canny算子,提出了一种Canny自适应的边缘检测方法。Canny自适应算法在保持了Canny算子原有的定位准确,单边响应和信噪比高等优点的基础上,提高了Canny算子在提取图像边缘细节信息和抑制假边缘噪声方面的性能。Canny自适应算法将整幅图像分割为若干子图像,并根据各子图像的边缘梯度信息,结合全局边缘梯度特征信息自适应地生成动态阈值,提高了边缘检测的自动化程度,在实际的应用中获得了很好的效果。通过数学分析和试验结果证明了Canny自适应算法是一种有效的边缘检测改善方法。

关 键 词:图像处理  边缘检测  Canny算子  自适应阈值
文章编号:1006-8961(2004)08-0957-06

An Adaptive Edge-detection Method Based on Canny Algorithm
WANG Zhi,HE Sai-xian and WANG Zhi,HE Sai-xian.An Adaptive Edge-detection Method Based on Canny Algorithm[J].Journal of Image and Graphics,2004,9(8):957-962.
Authors:WANG Zhi  HE Sai-xian and WANG Zhi  HE Sai-xian
Abstract:This paper is based on Canny algorithm.An adaptive Canny algorithm of edge-detection method is proposed.This algorithm not only keeps the Canny's excellent performance in good localization,only one response to a single edge and good detection,but also improves the performance in the detail edge-detection and good detection. Canny adaptive algorithm divides image into sub-images and detects them with adaptive threshold value according to the whole image edge information, that improves the automaticity of edge-detection.With the mathematic analysis and test result,it is demonstrated that the adaptive edge-detection method is an efficient improving approach on edge-detection.
Keywords:image processing  edge-detection  Canny algorithm  adaptive threshold
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