›› 2015, Vol. 28 ›› Issue (9): 144-.

• 论文 • 上一篇    下一篇

基于稀疏表示的超分辨率图像重建

沈丽,韩彦芳   

  1. (上海理工大学 光电信息与计算机工程学院,上海 200093)
  • 出版日期:2015-09-15 发布日期:2015-09-15
  • 作者简介:沈丽(1989—),女,硕士研究生。研究方向:超分辨率图像重建。E-mali:shenli_v@sina.com。韩彦芳(1974—),女,博士。研究方向:图像处理,模式识别。

Image Super-resolution Reconstruction Based on Sparse Representatio

SHEN Li,HAN Yanfang   

  1. (School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
  • Online:2015-09-15 Published:2015-09-15

摘要:

针对单幅低分辨率图像的超分辨率重建,提出一种基于稀疏表示的改进算法。通过联合输入低分辨率图像块和对应生成的高分辨率图像块,求解其在高低分辨率字典对上的稀疏表示系数,再将系数与高分辨率字典结合,修正输出的高分辨率图像块。仿真实验表明,文中提出的算法有效提升了重建图像的质量。

关键词: 稀疏表示, 超分辨率, 图像重建, 联合高低分辨图像块

Abstract:

A super-resolution reconstruction approach to single low-resolution image based on sparse representation is presented.We solve the sparse linear combination of the dictionary through jointing input low-resolution image and generated high-resolution image patches,and then use the coefficients to adjust the output high-resolution image patches.The results of simulation experiments show that the proposed algorithm is effective to improve the quality of the reconstruction of high-resolution image.

Key words: sparse representation;super-resolution;image reconstruction;jointing high and low resolution image patches

中图分类号: 

  • TP391.41