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基于Hessian矩阵和区域生长的脉络膜血管自动检测

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摘要:脉络膜血管自动检测在临床上具有重要意义,可通过观察分析脉络膜血管的形态、厚度等信息对多种眼底疾病进行诊断。为辅助临床诊断,提出了一种新的基于SD-OCT图像的脉络膜血管自动检测方法。首先检测出色素上皮层下边界,确定感兴趣区域(Volume of Interest,VOI),然后对图像进行基于灰度线性变换的增强以及三维块匹配滤波等预处理,随后采用Hessian矩阵对血管进行初步提取,提取结果作为目标区域的种子点,进一步用三维区域生长方法检测完整的血管区域,并通过形状信息排除误检以及形态学滤波对检测结果进行后处理。测试结果表明,该方法是一种有效的脉络膜血管自动检测方法。

关键词:脉络膜血管;Hessian矩阵;区域生长;三维块匹配滤波

DOIDOI:10.11907/rjdk.161164

中图分类号:TP319文献标识码:A文章编号:1672-7800(2016)006-0132-05

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