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(CVPRW 2017) Formresnet:Formatted residual learning for image restoration

Jiao J, Tu W C, He S, et al. Formresnet: Formatted residual learning for image restoration[C]//Computer Vision and Pattern Recognition Workshops (CVPRW), 2017 IEEE Conference on. IEEE, 2017: 1034-1042.



1. Overview


1.1. Motivation

  • directly learn the clean images may suffer gradient problem
  • directly learn the high-frequency residual may harm the structure detials
  • L2 loss suffers from blur

In this paper, it

  • proposed residual formating layer to recover the latent clean image
  • learn the structure detial
  • proposed cross-level loss net
  • Experiments on denoising, SR, de-raining, inpainting, enhancement



2. Methods




2.1. Residual Formatting Layer

  • aim to reduce the corrupation on the input image
  • layer can be stacked


2.2. Cross-Level Loss Net

2.2.1. Pixel Loss



2.2.2. Feature Loss



2.2.3. Gradient Loss



  • sobel

2.2.4. Loss Function





3. Experiments


3.1. Comparison



3.2. Time