滤除血管减影图像噪声的多SE形态金字塔法

Filter of noises for DSA using Multi-SE morphological pyramid

在广义形态滤波器的基础上，与金字塔算法结合，提出了一种新的血管减影图像滤波器——多SE形态金字塔它利用不同的结构元在金字塔的各层图像上进行形态运算，达到多尺度滤出噪声，同时尽可能多地保留图像几何特征的目的还给出了实例，并与传统的形态金字塔进行比较结果表明，新滤波器具有更好的噪声抑制和细节保持能力。

A new filter used in DSA is discussed. It combine s GMF(Generalized Morphological Filter) with pyramid and makes some morphological operations in every level of pyramid using different structuring elements called multi-SE morphological pyramid, so that the noises can be suppressed in multi-scales and geometrical features be preserved. The examples is also given comparing the new filter with normal morphological pyramid. Results shows that the new filter posses more strong abilities in suppression of noises and preservation of fine geometrical features.