然后利用形态学闭运算提取心音包络；
Secondly, the envelope of heart sounds was extracted by closing operation of mathematical morphology;
膨胀、腐蚀、开运算、闭运算是数学形态学的基础。
Erosion, dilation, opening operation and closing operation are the basis of mathematical morphology.
采用扩展输入层数据的办法修正了传统的形态开、闭运算三层前馈BP网络模型。
The traditional 3-layer feed forward BP network modal of morphological opening and closing operation was modified by extending the input layer data.
其在HSV空间中进行色彩分割，运用数学形态学处理，采用闭运算，形成连通域。
The color division is carried out in HSV space; the math morphologic and close calculations are adopted to create communication area.
对于某些细化后会产生空洞、断点的原始图像，需要对细化后的图像运用闭运算进行填充以保持细化后图像的连通性。
In some cases, the original images will produce cavities and breakpoints after, it needs to be processed by closing method in order to keep the connectivity of thinning image.
首先对灰度图进行二值化处理，然后利用数学形态学的基本运算——膨胀运算和闭运算对二值图进行消噪及去毛刺处理。
Firstly, gray image changed into binary image. Then, noise and stub burr is removed by using basic operation of mathematical morphology-dilation and closing operation.
并且该算法可以得到闭式解，有效地降低了DOA估计的运算量。
This method provides a closed-form solution and reduces the computational load of DOA estimation.
本文定义了模糊关系的自反闭包、对称闭包概念，同时给出了模糊关系的自反闭包、对称闭包的运算方法及性质。打破了在原有的模糊关系只有传递闭包的局面。
This paper gives a new concept of reflexive closure of fuzzy relation and symmetric closure of fuzzy relation, and also gives operation method and properties about it.
本文定义了模糊关系的自反闭包、对称闭包概念，同时给出了模糊关系的自反闭包、对称闭包的运算方法及性质。打破了在原有的模糊关系只有传递闭包的局面。
This paper gives a new concept of reflexive closure of fuzzy relation and symmetric closure of fuzzy relation, and also gives operation method and properties about it.
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