Deep Universal Blind Image Denoising

• URL: http://arxiv.org/abs/2101.07017v1
• Date: Mon, 18 Jan 2021 11:49:21 GMT
• Title: Deep Universal Blind Image Denoising
• Authors: Jae Woong Soh, Nam Ik Cho
• Abstract summary: Deep convolutional neural networks (CNNs) have shown great success in image denoising by incorporating large-scale synthetic datasets. We present a CNN-based method that leverages the advantages of both methods based on the Bayesian perspective.
• Score: 26.77629755630694
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Image denoising is an essential part of many image processing and computer vision tasks due to inevitable noise corruption during image acquisition. Traditionally, many researchers have investigated image priors for the denoising, within the Bayesian perspective based on image properties and statistics. Recently, deep convolutional neural networks (CNNs) have shown great success in image denoising by incorporating large-scale synthetic datasets. However, they both have pros and cons. While the deep CNNs are powerful for removing the noise with known statistics, they tend to lack flexibility and practicality for the blind and real-world noise. Moreover, they cannot easily employ explicit priors. On the other hand, traditional non-learning methods can involve explicit image priors, but they require considerable computation time and cannot exploit large-scale external datasets. In this paper, we present a CNN-based method that leverages the advantages of both methods based on the Bayesian perspective. Concretely, we divide the blind image denoising problem into sub-problems and conquer each inference problem separately. As the CNN is a powerful tool for inference, our method is rooted in CNNs and propose a novel design of network for efficient inference. With our proposed method, we can successfully remove blind and real-world noise, with a moderate number of parameters of universal CNN.

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