# Three-stage Unstructured Filter for Removing Mixed Gaussian plus Random Impulse Noise

### Fitri Utaminingrum, Keiichi Uchimura, Gou Koutaki

#### Abstract

Digital image processing is often contaminated by more than one type of noise, such as mixed noise. In this paper, we propose a three-stage process to develop K-SVD method not only for reducing Gaussian noise but also for mixed Gaussian and impulse noise with optimizing input system and preserving edge structure. A three-stage process is combining of impulse noise removal, edge reconstruction and image smoothing. Pressing of an impulse noise in the early stages by Decision Based Algorithm (DBA) and repairing edge structure by an edge-map are able to optimize the performance of the K-SVD method for smoothing an image. The performance of the filter is analysed in terms of Peak Signal to Noise Ratio (PSNR), Mean Structural Similarity (MSSIM) index and Blind Image Quality Index (BIQI). The simulation result is obtained a significant improvement over the previous research.

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#### Paper Citation

#### in Harvard Style

Utaminingrum F., Uchimura K. and Koutaki G. (2014). **Three-stage Unstructured Filter for Removing Mixed Gaussian plus Random Impulse Noise** . In *Proceedings of the 11th International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2014)* ISBN 978-989-758-046-8, pages 99-106. DOI: 10.5220/0005051400990106

#### in Bibtex Style

@conference{sigmap14,

author={Fitri Utaminingrum and Keiichi Uchimura and Gou Koutaki},

title={Three-stage Unstructured Filter for Removing Mixed Gaussian plus Random Impulse Noise},

booktitle={Proceedings of the 11th International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2014)},

year={2014},

pages={99-106},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0005051400990106},

isbn={978-989-758-046-8},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the 11th International Conference on Signal Processing and Multimedia Applications - Volume 1: SIGMAP, (ICETE 2014)

TI - Three-stage Unstructured Filter for Removing Mixed Gaussian plus Random Impulse Noise

SN - 978-989-758-046-8

AU - Utaminingrum F.

AU - Uchimura K.

AU - Koutaki G.

PY - 2014

SP - 99

EP - 106

DO - 10.5220/0005051400990106