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基于多尺度Gabor滤波的造影血管中轴线的自动提取

DOI: 10.11834/jig.2005012285

Keywords: 中轴提取,Gabor滤波,多尺度,数字造影血管

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Abstract:

提出了一种自动提取数字造影血管图像中2维血管树中轴的新方法。作为血管树3维重建的基础,2维中轴提取的准确性显得格外重要。该方法充分利用了多尺度实Gabor滤波灵活的频率带宽和理想的增强效应,对不同粗细的血管进行中轴增强和去除背景噪声,再利用Hessian矩阵计算结果提供的方位信息进行非最大值抑制求取响应图的局部极值点,最后通过双阈值分割得到血管中轴线。实验结果表明,该方法鲁棒性好,提取中轴线的质量高。

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