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电子学报  2012 

Top-Hat变换在心电R波定位中的参数优化

, PP. 2421-2425

Keywords: 优化,心电,R波定位,Top-Hat变换,结构元素

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Abstract:

为解决Top-Hat变换在心电R波定位中结构元素的优化选取问题,构建一个与心电相近的带有尖峰的周期信号,在此基础上定义目标函数,利用开运算的灰值形态学几何意义导出了目标函数的解析表达式,进而分析得出了Top-Hat变换中的结构元素长度的最优值的解,并由此导出了Top-Hat变换在心电R波定位时结构元素长度的最优估值计算公式.实验结果表明:按本文提出的方法选取最优值,在利用Top-Hat变换进行心电R波定位时,能在保持最佳定位效果的前提下,具有最低的算法时间复杂度.

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