高晓兴 曹丽 常桂然
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摘要： 采用Canny算子进行边缘检测时，需人工设定高低2个阈值，对不同的图像采用相同的阈值，边缘检测效果差异很大。这一点限制了Canny算子在实际中的应用。针对这一问题，本文提出了一种基于Gabor奇部滤波器的边缘检测方法，在不同的尺度下分别采用非极大值抑制，然后利用Canny算子在高低阈值图像中查找边缘点的方法对图像进行边缘检测，无需人为的设定任何参数。实验结果表明这种算法不但克服了Canny算法中人为设定阈值的缺陷，而且能有效地去除了图像中的伪边缘。
