Multi-stage Directional Median Filter

  title={Multi-stage Directional Median Filter},
  author={Zong Chen and Xiang Lin},
Median filter is widely used to remove impulse noise without blurring sharp edges. However, when noise level increased, or with thin edges, median filter may work poorly. This paper proposes a new filter, which will detect edges along four possible directions, and then replace noise corrupted pixel with estimated noise-free edge median value. Simulations… CONTINUE READING