Papers › Automatic Tuning of Denoising Algorithms Parameters Without Ground Truth
Automatic Tuning of Denoising Algorithms Parameters Without Ground Truth
Arthur Floquet, Sayantan Dutta, Emmanuel Soubies, Duong Hung Pham, Denis Kouame
Denoising is omnipresent in image processing. It is usually addressed with algorithms relying on a set of hyperparameters that control the quality of the recovered image. Manual tuning of those parameters can be a daunting task, which calls for the development of automatic tuning methods. Given a denoising algorithm, the best set of parameters is the one that minimizes the error between denoised and ground-truth images. Clearly, this ideal approach is unrealistic, as the ground-truth images are unknown in practice. In this work, we propose unsupervised cost functions -- i.e., that only require the noisy image -- that allow us to reach this ideal gold standard performance. Specifically, the proposed approach makes it possible to obtain an average PSNR output within less than 1% of the best achievable PSNR.
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