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LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER

Abstract: 

Image noise filters usually assume noise as white Gaussian. However, in a capturing pipeline, noise often becomes spatially correlated due to in-camera processing that aims to suppress the noise and increase the compression rate. Mostly, only high-frequency noise components are suppressed since the image signal is more likely to appear in the low-frequency components of the captured image. As a result, noise emerges as coarse grain which makes white (all-pass) noise filters ineffective, especially when the resolution of the target display is lower than the captured image. Denoising of image approximation in coarse scale has the advantage of removing low-frequency noise, however, lack of spatial resolution degrades the image quality. This paper presents an approach for a coarse-grain removal. Our approach utilizes existing white Gaussian noise filters to address low-frequency component of spatially correlated noises, employing pixel decoupling, local shrinkage, and soft thresholding. Subjective and objective results show that the proposed approach better handles low-frequency noise compared to related work.

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Paper Details

Authors:
Meisam Rakhshanfar and Maria A. Amer
Submitted On:
8 October 2018 - 6:24pm
Short Link:
Type:
Poster
Event:
Paper Code:
WQ.P3.7
Document Year:
2018
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icip18Poster.pdf

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[1] Meisam Rakhshanfar and Maria A. Amer, "LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3648. Accessed: Dec. 13, 2018.
@article{3648-18,
url = {http://sigport.org/3648},
author = {Meisam Rakhshanfar and Maria A. Amer },
publisher = {IEEE SigPort},
title = {LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER},
year = {2018} }
TY - EJOUR
T1 - LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER
AU - Meisam Rakhshanfar and Maria A. Amer
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3648
ER -
Meisam Rakhshanfar and Maria A. Amer. (2018). LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER. IEEE SigPort. http://sigport.org/3648
Meisam Rakhshanfar and Maria A. Amer, 2018. LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER. Available at: http://sigport.org/3648.
Meisam Rakhshanfar and Maria A. Amer. (2018). "LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER." Web.
1. Meisam Rakhshanfar and Maria A. Amer. LOW-FREQUENCY IMAGE NOISE REMOVAL USING WHITE NOISE FILTER [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3648