Journal of Xidian University

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Improved RLTV algorithm used to radio image reconstruction

WANG Shuzhen1;XIE Kun1;LI Li1;ZHANG Jingang2   

  1. (1. School of Computer Science and Technology, Xidian Univ., Xi'an 710071, China;
    2. Chinese Academy of Sciences, Academy of Opto-Electronics, Beijing 100094, China)
  • Received:2016-10-19 Online:2017-06-20 Published:2017-07-17

Abstract:

This article simply introduces the basic theory of total variation and the Richardson-Lucy algorithm based on Total Variation. When this algorithm is applied to radio image reconstruction, accumulated discrepancy rises gradually during the iterations as the result of the approximation in derivation; hence the recovered images are often unsatisfactory. Aiming at this problem, this article comes up with a new Richardson-Lucy algorithm based on nonlinear projection and it is successfully applied to the heliograph image reconstruction. The simulation experiment shows that it turns out to be more effective to restore the image measured by using the improved Richardson-Lucy algorithm.

Key words: total variation, nonlinear projection, image reconstruction