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Enhanced Deep Residual Networks for Single Image Super-Resolution

2017-07-10Code Available1· sign in to hype

Bee Lim, Sanghyun Son, Heewon Kim, Seungjun Nah, Kyoung Mu Lee

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Abstract

Recent research on super-resolution has progressed with the development of deep convolutional neural networks (DCNN). In particular, residual learning techniques exhibit improved performance. In this paper, we develop an enhanced deep super-resolution network (EDSR) with performance exceeding those of current state-of-the-art SR methods. The significant performance improvement of our model is due to optimization by removing unnecessary modules in conventional residual networks. The performance is further improved by expanding the model size while we stabilize the training procedure. We also propose a new multi-scale deep super-resolution system (MDSR) and training method, which can reconstruct high-resolution images of different upscaling factors in a single model. The proposed methods show superior performance over the state-of-the-art methods on benchmark datasets and prove its excellence by winning the NTIRE2017 Super-Resolution Challenge.

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
BSD100 - 4x upscalingEDSRPSNR27.71Unverified
DIV2K val - 4x upscalingEDSRPSNR29.25Unverified
FFHQ 1024 x 1024 - 4x upscalingEDSRFID15.54Unverified
FFHQ 256 x 256 - 4x upscalingEDSRFID129.14Unverified
FFHQ 512 x 512 - 4x upscalingEDSRPSNR30.19Unverified
Manga109 - 4x upscalingEDSRSSIM0.91Unverified
Set14 - 4x upscalingEDSRPSNR28.8Unverified
Set5 - 4x upscalingEDSRPSNR32.46Unverified
Urban100 - 4x upscalingEDSRPSNR26.64Unverified

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