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Abstract #4193

Convolutional-neural-network-based denoising with estimated noise-based normalization to effectively reduce noise for various noise levels

Atsuro Suzuki1, Tomoki Amemiya1, Yukio Kaneko1, Suguru Yokosawa1, and Toru Shirai1
1Imaging Technology Center, FUJIFILM Corporation, Tokyo, Japan

Synopsis

Keywords: Machine Learning/Artificial Intelligence, Machine Learning/Artificial Intelligence, Noise reductionTo develop a convolutional neural network (CNN)-based denoiser for various noise levels, we propose the use of estimated noise-based normalization in denoising. When the CNN-based denoiser with estimated noise-based normalization was applied to brain FLAIR images with various noise levels, it resulted in values closer to the normalized root mean square error (NRMSE) between the denoised and the target images compared with a conventional CNN-based denoiser trained with the same noise level as that in the input image. In conclusion, our method effectively reduced the noise in an image with various noise levels in terms of minimization of the NRMSE.

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Keywords