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This work identifies and addresses two important technical challenges in single-image super-resolution: (1) how to upsample an image without magnifying noise and (2) how to preserve large scale structure when upsampling. We summarize the techniques we developed for our second place entry in Track 1 (Bicubic Downsampling), seventh place entry in Track 2 (Realistic Adverse Conditions), and seventh place entry in Track 3 (Realistic difficult) in the 2018 NTIRE Super-Resolution Challenge.doi:10.1109/cvprw.2018.00132 dblp:conf/cvpr/BeiDHMRR18 fatcat:xx2mnqdkmffzvaiep6rsfwdnu4