数学形态学算法是基于信号局部特征的，可以有效地突出信号的峰谷点；
The mathematical morphology operator is based on the signal shape which clarifies the signal's peaks and valleys.
研究了多种目标提取的数学形态学算法，包括击中与击不中变换、边缘检测与形态学梯度等。
Various algorithms of mathematical morphology are researched, they include hit or miss Transformation, edge detection and morphological grads, etc.
最后实现了一些常用线性和非线性算法，与数学形态学算法一起形成一个适用于水声图象处理和分析的软件。
Finally, we constructed a software which included some linear and nonlinear algorithms along with the mathematical morphology for the preprocessing and analyzing in underwater acoustic images.
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