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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Noise Reduction on Bracketed Images for High Dynamic Range Imaging

Author 1: Seong-O Shim

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2020.0110820

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 11 Issue 8, 2020.

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Abstract: The quality of a high dynamic range (HDR) image produced from bracketed images taken at different camera exposure times can be degraded by noise contained in bracketed images. In this paper, we propose a noise reduction method on bracketed images based on exposure time ratio. First, for each pixel pair of a same scene point lying on two different images, the ratio of their intensity values is compared with the ratio of exposure times of the images on which the pixels are lying. If the compared ratios are close, these two pixels are included in noise-free pixels set. The complement of noise-free pixels set is defined as noisy pixels set. Then, the intensity value of each pixel in noisy pixels set is corrected by its expected value computed from noise-free pixel of the same scene point lying on another image. Experimental results show that all the noisy intensity values can be correctly restored from noise-free pixels except the saturated pixels. Denoising results by PSNR show that the proposed method outperforms the other recent denoising methods such as based-on pixel density filter (BPDF), noise adaptive fuzzy switching median filter (NAFSMF), and adaptive Riesz mean filter (ARmF).

Keywords: Image denoising; high dynamic range imaging; noise detection; noise removal; image restoration

Seong-O Shim, “Noise Reduction on Bracketed Images for High Dynamic Range Imaging” International Journal of Advanced Computer Science and Applications(IJACSA), 11(8), 2020. http://dx.doi.org/10.14569/IJACSA.2020.0110820

@article{Shim2020,
title = {Noise Reduction on Bracketed Images for High Dynamic Range Imaging},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2020.0110820},
url = {http://dx.doi.org/10.14569/IJACSA.2020.0110820},
year = {2020},
publisher = {The Science and Information Organization},
volume = {11},
number = {8},
author = {Seong-O Shim}
}


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