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• W2912031978 abstract "The blind additive white Gaussian noise level estimation is an important and a challenging area of digital image processing with numerous applications including image denoising and image segmentation. In this paper, a novel block-based noise level estimation algorithm is proposed. The algorithm relies on the artificial neural network to perform a complex image patch analysis in the singular value decomposition (SVD) domain and to evaluate noise level estimates. The algorithm exhibits the capacity to adjust the effective singular value tail length with respect to the observed noise levels. The results of comparative analysis show that the proposed ANN-based algorithm outperforms the alternative single stage block-based noise level estimating algorithm in the SVD domain in terms of mean square error (MSE) and average error for all considered choices of block size. The most significant improvements in MSE levels are obtained at low noise levels. For some test images, such as “Car” and “Girlface”, at σ = 1 , these improvements can be as high as 99% and 98.5%, respectively. In addition, the proposed algorithm eliminates the error-prone manual parameter fine-tuning and automates the entire noise level estimation process." @default.
• W2912031978 created "2019-02-21" @default.
• W2912031978 creator A5031047306 @default.
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• W2912031978 date "2019-02-01" @default.
• W2912031978 modified "2023-09-27" @default.
• W2912031978 title "Application of Artificial Neural Network for Image Noise Level Estimation in the SVD domain" @default.
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• W2912031978 doi "https://doi.org/10.3390/electronics8020163" @default.
• W2912031978 hasPublicationYear "2019" @default.
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