Journal of Xidian University ›› 2022, Vol. 49 ›› Issue (2): 228-236.doi: 10.19665/j.issn1001-2400.2022.02.026

• Computer Science and Technology & Cyberspace Security • Previous Articles    

Multi-scale generation antagonistic network for the low-dose CT images super-resolution reconstruction algorithm

XU Ying1,2(),LIU Shuai1(),SHAO Meng1(),YUE Guodong1(),AN Dong1()   

  1. 1. College of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,China
    2. School of Mechanical and Electrical Engineering,Guangdong University of Technology,Guangzhou 510006,China
  • Received:2020-08-03 Online:2022-04-20 Published:2022-05-31
  • Contact: Dong AN E-mail:xuying@sjzu.edu.cn;1826380327@stu.sjzu.edu.cn;mshao@sjzu.edu.cn;ygd@sjzu.edu.cn;andong@sjzu.edu.cn

Abstract:

Low-dose CT can reduce X-ray radiation and damage to human body,but the imaging quality can also be significantly reduced.In order to obtain high quality images with fine structural details,a low dose CT image super-resolution reconstruction algorithm based on the multi-scale residual generation network (MSRGAN) is proposed to recover high resolution (HR) images from low resolution (LR) images with pathology unchanged.First,a residual network is introduced to prevent overfitting while realizing feature reuse.Second,the multi-scale network can make full use of image features of different sizes,enrich image details and improve the utilization rate of features in the reconstruction process.Finally,by combining the adversarial loss and content loss,the reconstructed image with a better perceived quality can be obtained when the generated feature is constrained.Experimental results show that compared with other algorithms,this method improves in SSIM,FSIM and PSNR indexes,that its GAN's IS,FID and SWD performance is better than that of the other two Gan-based algorithms,and that it has a better performance in edge contour detail,which fully proves the effectiveness of this algorithm.

Key words: image processing, super-resolution, generate antagonistic network, multi-scale features, low-dose CT

CLC Number: 

  • TP391