Proceedings ArticleDOI
Two-stage methods for mixed noise removal [image denoising]
V.V. Lukin,Pertti T. Koivisto,N.N. Ponomarenko,S.K. Abramov,J.T. Astola +4 more
- pp 11-11
Reads0
Chats0
TLDR
This paper compares in this paper two ways how to apply some robust order statistic filter and one is to use a two-stage approach where impulses are first detected and removed, and after that additive noise is suppressed.Abstract:
Summary form only given. Images are quite often corrupted by mixed additive and impulsive noise. Then, the task in the filtering is to remove both components of the noise. We compare in this paper two ways how to do this. The first one is to apply some robust order statistic filter and the other one is to use a two-stage approach where impulses are first detected and removed, and after that additive noise is suppressed. For the latter approach, two methods are proposed. We demonstrate through experiments that the latter approach performs better than several standard order statistic filtering techniques. In addition, a modified version of a method to estimate the variance of additive noise is introduced. The given method performs well enough even with mixed noise.read more
Citations
More filters
Journal ArticleDOI
Methods and automatic procedures for processing images based on blind evaluation of noise type and characteristics
Vladimir V. Lukin,Sergey K. Abramov,Nikolay N. Ponomarenko,Mikhail L. Uss,Mikhail L. Uss,Mikhail Zriakhov,Benoit Vozel,Kacem Chehdi,Jaakko Astola +8 more
TL;DR: Possible structures of automatic procedures are presented and discussed for several typical applications of image processing as remote sensing data preprocessing and compression.
Proceedings ArticleDOI
Adaptive DCT-based filtering of images corrupted by spatially correlated noise
TL;DR: This paper deals with how to modify a denoising algorithm in order to incorporate a priori or preliminarily obtained knowledge of spatial correlation characteristics of noise, and presents simulation results showing the effectiveness of taking into consideration noise correlation properties.
Journal ArticleDOI
Discrete cosine transform−based local adaptive filtering of images corrupted by nonstationary noise
Vladimir V. Lukin,Dmitriy V. Fevralev,Nikolay N. Ponomarenko,Sergey K. Abramov,Oleksiy Pogrebnyak,Karen Egiazarian,Jaakko Astola +6 more
TL;DR: A locally adaptive filter is proposed based on evaluation of image local activity in a "blind" manner and on discrete cosine transform computed in overlapping blocks that exploits discrimination of homogeneous and heterogeneous image regions by adaptive threshold setting.
Book ChapterDOI
Methods for Blind Estimation of the Variance of Mixed Noise and Their Performance Analysis
Sergey K. Abramov,Victoria Zabrodina,Vladimir V. Lukin,Benoit Vozel,Kacem Chehdi,Jaakko Astola +5 more
TL;DR: This paper focuses on considering multichannel images where the general term “multichannel” relates to color, multiand hyperspectral imaging, dual and multipolarization radar imaging, multitemporal sensing, where multiple images of the same scene or terrain are obtained.
Proceedings ArticleDOI
Myriad-based shift parameter estimation method and its application to image filtering and processing
TL;DR: It is shown that myriad filter with properly selected tunable (lineariza-tion) parameter is able to be an efficient NSF that outperforms well known α-trimmed and Wilcoxon filters.