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Image Super-Resolution Using Deep Convolutional Networks

2014-12-31Code Available1· sign in to hype

Chao Dong, Chen Change Loy, Kaiming He, Xiaoou Tang

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Abstract

We propose a deep learning method for single image super-resolution (SR). Our method directly learns an end-to-end mapping between the low/high-resolution images. The mapping is represented as a deep convolutional neural network (CNN) that takes the low-resolution image as the input and outputs the high-resolution one. We further show that traditional sparse-coding-based SR methods can also be viewed as a deep convolutional network. But unlike traditional methods that handle each component separately, our method jointly optimizes all layers. Our deep CNN has a lightweight structure, yet demonstrates state-of-the-art restoration quality, and achieves fast speed for practical on-line usage. We explore different network structures and parameter settings to achieve trade-offs between performance and speed. Moreover, we extend our network to cope with three color channels simultaneously, and show better overall reconstruction quality.

Tasks

Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
BSD100 - 4x upscalingSRCNNPSNR26.9Unverified
FFHQ 1024 x 1024 - 4x upscalingSRCNNFID31.84Unverified
FFHQ 256 x 256 - 4x upscalingSRCNNFID147.21Unverified
IXISRCNNPSNR 2x T2w37.32Unverified
Manga109 - 4x upscalingSRCNNSSIM0.86Unverified
Set14 - 4x upscalingSRCNNPSNR27.5Unverified
Set5 - 4x upscalingSRCNNPSNR30.49Unverified
Urban100 - 4x upscalingSRCNNPSNR24.52Unverified

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