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A Median Filtering Algorithm for Massive Multibeam Bathymetry Data
Author(s): 
Pages: 39-42
Year: Issue:  3
Journal: Hydrographic Surveying and Charting

Keyword:  multibeam echosoundingmedian filteringheapsorting algorithmdata processing;
Abstract: 针对CUBE算法中的数据中值滤波排序问题,设计了一种基于堆结构的中值滤波算法.这种方法以初始滤波窗口中间数据为支点,把滤波序列划分为2个堆,进而把查找滤波窗口中间位置数据转化为在两个堆中进行排序并输出根节点的操作.实验结果表明,这种方法的滤波速度约为基于二分查找的中值滤波算法的2~4倍,适合应用于海量数据的滤波处理.
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