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基于自适应方向滤波器的左心室轮廓提取

[The extracting of left ventricular contour based on adaptive directional filter].

作者信息

Ji Z, Mou X, Cai Y

机构信息

Xi'an Jiaotong University.

出版信息

Zhongguo Yi Liao Qi Xie Za Zhi. 1999 Sep;23(5):252-7.

Abstract

This paper proposes the adaptive directional filter, which is exploited for the extracting of left ventricular(LV) contour. This algorithm could produce the exact ridge point by applying directional filter with smoothing operator in the angiography images damaged by noise the Edge Directional Vector as the result of this filter is efficient for predicting the edge ahead, while the filter parameters is adaptive. This proposed method provides the more precise and more automatic--extracting LV contour only with fewer interactions. The experimental results show that this proposed algorithm could improve the accuracy and reproducibility, and reduce the computational consumption remarkably.

摘要

本文提出了一种自适应方向滤波器,用于提取左心室(LV)轮廓。该算法通过在受噪声干扰的血管造影图像中应用带有平滑算子的方向滤波器来产生精确的脊点。由于该滤波器的边缘方向向量能够有效地预测前方边缘,且滤波器参数是自适应的。所提出的方法只需较少的交互操作就能更精确、更自动地提取LV轮廓。实验结果表明,该算法能够提高准确性和可重复性,并显著降低计算量。

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