Paper $~~~~$ Code

One-Sided Box Filter

1. preserves edges
2. has high computation performance

Perform on nine cases and select the best one

As a result, this filter preserves edges

From left to right: original, iteration=10, iteration=100 and iteration=1000

R=5, first 10 iterations lead to

The fastest edge-preserving method. Its running time is only about 4X of box filter running time.

@ARTICLE{osbf,
  author={Gong, Yuanhao},
  journal={IEEE Access}, 
  title={OSBF: One-Sided Box Filter for Edge-preserving Image Processing}, 
  year={2025},
  volume={13},
  number={},
  pages={61149-61160},
  doi={10.1109/ACCESS.2025.3555434}}