Switching Median Filter with Signal Dependent Thresholds Designed by using Genetic Algorithm

Ryosuke Kubota, Keisuke Onaga, Noriaki Suetake

2014

Abstract

In this paper, we propose a new switching median filter with signal dependent thresholds designed by a genetic algorithm (GA). The switching median filter detects noise-corrupted pixels based on a threshold. Then it restores only the detected pixels. The present switching median filter deals with the random-valued impulse noises, whose distribution is ideally assumed as a uniform distribution. In the present method, the switching median filter, which has two kinds of the thresholds, is introduced. One is switching thresholds to detect the noise, and the other is selecting thresholds to choose the suitable switching threshold. As the suitable selecting threshold, a variance of signals is used. Then all of the switching and selecting thresholds of the proposed switching median filter are automatically optimized by using GA. To optimize the thresholds with GA, distribution distance between the assumed and the detected noises is employed as a fitness function. The validity and effectiveness of the proposed method is verified by some experiments.

Paper Citation

in Harvard Style

Kubota R., Onaga K. and Suetake N. (2014). Switching Median Filter with Signal Dependent Thresholds Designed by using Genetic Algorithm . In Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2014) ISBN 978-989-758-003-1, pages 222-227. DOI: 10.5220/0004851702220227

in Bibtex Style

@conference{visapp14,
author={Ryosuke Kubota and Keisuke Onaga and Noriaki Suetake},
title={Switching Median Filter with Signal Dependent Thresholds Designed by using Genetic Algorithm},
booktitle={Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2014)},
year={2014},
pages={222-227},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004851702220227},
isbn={978-989-758-003-1},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 9th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2014)
TI - Switching Median Filter with Signal Dependent Thresholds Designed by using Genetic Algorithm
SN - 978-989-758-003-1
AU - Kubota R.
AU - Onaga K.
AU - Suetake N.
PY - 2014
SP - 222
EP - 227
DO - 10.5220/0004851702220227