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- W4298088975 abstract "A problem of image denoising when images are corrupted by a non-stationary noise is considered in this paper. Since in practice no a priori information on noise is available, noise statistics should be pre-estimated for image denoising. In this paper, deep convolutional neural network (CNN) based method for estimation of a map of local, patch-wise, standard deviations of noise (so-called sigma-map) is proposed. It achieves the state-of-the-art performance in accuracy of estimation of sigma-map for the case of non-stationary noise, as well as estimation of noise variance for the case of additive white Gaussian noise. Extensive experiments on image denoising using estimated sigma-maps demonstrate that our method outperforms recent CNN-based blind image denoising methods by up to 6 dB in PSNR, as well as other state-of-the-art methods based on sigma-map estimation by up to 0.5 dB, providing same time better usage flexibility. Comparison with the ideal case, when denoising is applied using ground-truth sigma-map, shows that a difference of corresponding PSNR values for most of noise levels is within 0.1-0.2 dB and does not exceeds 0.6 dB." @default.
- W4298088975 created "2022-10-01" @default.
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- W4298088975 date "2021-09-24" @default.
- W4298088975 modified "2023-09-30" @default.
- W4298088975 title "Learning-based Noise Component Map Estimation for Image Denoising" @default.
- W4298088975 doi "https://doi.org/10.48550/arxiv.2109.11877" @default.
- W4298088975 hasPublicationYear "2021" @default.
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