Noise-induced contrast enhancement of dark images using non-dynamic stochastic resonance
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"Noise-induced contrast enhancement ..." refers background in this paper
...More technically, SR occurs if the SNR, input/output correlation have a well marked maximum at a certain noise level [13], [15]....
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...Performance measures such as peak signal-to-noise-ratio (PSNR), mean-squareerror (MSE), structural similarity index measure (SSIM), quality index etc. are not suitable for our purpose as they require distortion-free image or reference image....
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...For large noise intensities the output is dominated by the noise, also leading to a low SNR....
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...However, recent studies have convincingly shown that in non-linear systems, noise can induce more ordered regimes, which cause the amplification of weak signals and increase the signal-tonoise ratio (SNR) [12], [13], [14]....
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...The general behavior of SR mechanism shows that at lower noise intensities the weak signal is unable to cross the threshold, thus giving a very low SNR....
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2,671 citations
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"Noise-induced contrast enhancement ..." refers methods in this paper
...The performance of the proposed technique (using additive Gaussian noise) is compared with that of contrast limited adaptive histogram equalization (CLAHE) [20], gamma correction (Gamma) [2], single-scale retinex (SSR) [3], multi-scale retinex (MSR) [21] modified high-pass filtering (MHPF) [22] and Auto-contrast control of Adobe Photoshop....
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