Abstract
Two key deterministic properties of analog median filters are established. The first is that root signals are characterized by a special class of locally monotone functions and the second is that the repeated application of a median filter produces a root signal that retains significant features in the original data. Both results are extensions of well-known facts for discrete median filters. In addition, it is shown that these properties do not extend to a natural multidimensional version of the median filter.
Original language | English |
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Pages (from-to) | 1629-1640 |
Number of pages | 12 |
Journal | IEEE Transactions on Information Theory |
Volume | 37 |
Issue number | 6 |
DOIs | |
Publication status | Published - Nov 1991 |
Externally published | Yes |
Keywords
- analog filters
- Median filters
- nonlinear filters