The weighted median filter
暂无分享,去创建一个
The median filter is well-known [1, 2]. However, if a user wishes to predefine a set of feature types to remove or retain, the median filter does not necessarily satisfy the requirements. A more general filter, called the Weighted Median Filter, of which the median filter is a special case, is described. It enables filters to be designed with a wide variety of properties. Particular cases of filter requirements are discussed and the corresponding filters are derived. The notion of a minimal weighted median filter, of a subclass that act identically, is introduced and discussed. The question of finding the number of distinct ways a class of filters can act is considered and solved for some classes.
[1] F. R. S. Sampson. Royal Observatory, Edinburgh , 1914 .
[2] R. Douglas Martin,et al. Background Following on Schmidt Plates Using a Digital Filtering Technique , 1979 .