Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors Public

High resolution Magnetic Resonance (MR) images are desired for accurate diagnostics. In practice, image resolution is restricted by factors like hardware and processing constraints. Recently, deep learning methods have been shown to produce compelling state-of-the-art results for image enhancement/superresolution. Paying particular attention to desired hi-resolution MR image structure, we propose a new regularized network that exploits image priors, namely a low-rank structure and a sharpness prior to enhance deep MR image super-resolution (SR). Our contributions are then incorporating these priors in an analytically tractable fashion in the learning of a Convolutional Neural Network (CNN) that accomplishes the super-resolution task. This is particularly challenging for the low rank prior since the rank is not a differentiable function of the image matrix (and hence the network parameters), an issue we address by pursuing differentiable approximations of the rank. Sharpness is emphasized by the variance of the Laplacian which we show can be implemented by a fixed feedback layer at the output of the network. As a key extension, we modify the fixed feedback (Laplacian) layer by learning a new set of training data driven filters that are optimized for enhanced sharpness. Experiments performed on two publicly available MR brain image databases and comparisons against existing state-of-the-art methods show that the proposed prior guided network offers significant practical gains in terms of improved SNR/image quality measures. Because our priors are on output images, the proposed method is versatile and can be combined with a wide variety of existing network architectures to further enhance their performance.

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Creator
VENKATESWARARAO CHERUKURI
Keyword
MR image Super-Resolution
Rights
Attribution 4.0 International
Resource type
Software or Program Code
Size
1.94 GB
Total items
10

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User Venkateswararao Cherukuri has attached /concern/file_sets/6dj52w491v to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 20 days ago
User Venkateswararao Cherukuri has attached EDSR_officialcode.zip to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 20 days ago
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User Venkateswararao Cherukuri has attached model_BW_DNSP_EDSR.zip to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 20 days ago
User Venkateswararao Cherukuri has attached model_ADNI_DNSP_EDSR.zip to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 20 days ago
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User Venkateswararao Cherukuri has attached generateSharpSmooth.m to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
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User Venkateswararao Cherukuri has attached /concern/file_sets/t4b29b8402 to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached generateSharpSmooth.m to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached DNSP_SRCNN_train.py to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached DNSP_EDSR_AP_train.py to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached DNSP_Res_test.py to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached DNSP_SRCNN_test.py to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached /concern/file_sets/q5712m855v to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached DNSP_EDSR_test.py to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
User Venkateswararao Cherukuri has attached /concern/file_sets/d2514nm85x to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 9 months ago
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User Venkateswararao Cherukuri has attached DNSP_CODE.zip to Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 10 months ago
User Venkateswararao Cherukuri has deposited Deep MR Brain Image Super-Resolution Using Spatio-Structural Priors 10 months ago