Title
SRInpaintor: When Super-Resolution Meets Transformer for Image Inpainting
Abstract
Recent image inpainting methods have achieved remarkable improvements by using generative adversarial networks (GAN). Most of them have been designed to produce plausible results from high-level semantic features using only high-resolution (HR) supervision. However, because abundant details are lost in large holes, it is difficult to simultaneously synthesize details while preserving structural coherence in HR space. Besides, the correlations between the inside and outside of the missing region play a critical role in transferring relevant known information to generate semantic-coherent textures, especially in patch matching-based methods. In this work, we present SRInpaintor which inherits the merits of super-resolution (SR) and transformer for high-fidelity image inpainting. The SRInpaintor starts from global structure reasoning with low-resolution (LR) input and progressively refines the local textures in HR space, constituting a multi-stage framework with SR supervision. The bottom stage recovers coarse SR results that provide structural information as an appearance prior, and is combined with the higher-resolution corrupted image at the next stage to render available textures for the missing region. Such a design can analyse the image from LR to HR with the increase of stages, enabling coarse-to-fine information propagation and detail refinement. In addition, we propose a hierarchical transformer (HieFormer) to model the long-term correlations between distant contexts and holes. By embedding it into a compact latent space in a cross-scale manner, we can ensure reliable relevant texture transformation and robust appearance consistency. Experimental results demonstrate the superiority of our method compared with recent state-of-the-art methods. Code will be available on <uri xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">https://github.com/lifengshiwo/SRInpaintor</uri> .
Year
DOI
Venue
2022
10.1109/TCI.2022.3190142
IEEE Transactions on Computational Imaging
Keywords
DocType
Volume
Generative image inpainting,progressive super-resolution,transformer
Journal
8
ISSN
Citations 
PageRank 
2573-0436
0
0.34
References 
Authors
21
7
Name
Order
Citations
PageRank
Feng Li13411.31
Anqi Li200.34
Jia Qin300.34
Bai Huihui424341.01
Weisi Lin55366280.14
Runmin Cong630820.81
Yao Zhao71926219.11