Progressive back-projection network for COVID-CT super-resolution.

Computer Methods and Programs in Biomedicine
Zhaoyang SongHongmei Jiang

Abstract

Recently, the COVID-19 epidemic has become more and more serious around the world, how to improve the image resolution of COVID-CT is a very important task. The network based on progressive upsampling for COVID-CT super-resolution increases the reconstruction error. This paper proposes a progressive back-projection network (PBPN) for COVID-CT super-resolution to solve this problem. In this paper, we propose a progressive back-projection network (PBPN) for COVID-CT super-resolution. PBPN is divided into two stages, and each stage consists of back-projection, deep feature extraction and upscaling. We design an up-projection and down-projection residual module to minimize the reconstruction error and construct a residual attention module to extract deep features. In each stage, firstly, PBPN performs back-projection to extract shallow features by two up-projection and down-projection residual modules; then, PBPN extracts deep features from the shallow features by two residual attention modules; finally, PBPN upsamples the deep features through sub-pixel convolution. The proposed method achieves the improvements of about 0.14~0.47 dB/0.0012~0.0060 for × 2 scale factor, 0.02~0.08 dB/0.0024~0.0059 for × 3 scale factor, and 0.08~0.41 ...Continue Reading

References

Sep 21, 2004·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Zhou WangEero P Simoncelli
May 21, 2010·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Jianchao YangYi Ma
Aug 25, 2010·IEEE Transactions on Pattern Analysis and Machine Intelligence·Pablo ArbeláezJitendra Malik
Jan 14, 2016·IEEE Transactions on Pattern Analysis and Machine Intelligence·Chao DongXiaoou Tang
Oct 5, 2019·Computer Methods and Programs in Biomedicine·Defu QiuLixin Zheng
Jan 25, 2020·The New England Journal of Medicine·Na ZhuUNKNOWN China Novel Coronavirus Investigating and Research Team
Jul 31, 2020·IEEE Transactions on Medical Imaging·Xi OuyangDinggang Shen
Oct 3, 2020·Computer Methods and Programs in Biomedicine·Mojtaba F FathiRoshan M D'Souza

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Software Mentioned

LapSRN
Bicubic
CT
Adam
DRCN
VDSR
DSRN
SRCNN
PBPN
FSRCNN

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