Journal of Northeastern University(Natural Science) ›› 2023, Vol. 44 ›› Issue (2): 186-191.DOI: 10.12068/j.issn.1005-3026.2023.02.005

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Convergent Three-dimensional Target Matching Filtering for Ghost Imaging

ZHANG Shun-yao1, SANG Ai-jun1, SONG Li-jun2, WANG Shi-gang1   

  1. 1. College of Telecommunication Engineering, Jilin University, Changchun 130022, China; 2. Jilin Engineering Normal University,Changchun 130052, China.
  • Revised:2021-11-08 Accepted:2021-11-08 Published:2023-02-27
  • Contact: SANG Ai-jun
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Abstract: Aiming at the problems of low sampling frequency, low resolution and high noise in video ghost imaging reconstruction, an aggregated three-dimensional target matching filtering method was proposed. Firstly, each frame of the ghost imaging video is block-matched with the frame to be optimized and each frame of images after block matching is arranged to form a three-dimensional matrix according to the time sequence. According to the frame sequence of each frame picture, different frame weights are assigned to it. Then the matrix is subjected to three-dimensional weighted median filtering. After under-sampling simulation and experimental comparison of moving targets, the method proposed has not only lower noise figure and better structure retention, but also a better subjective evaluation compared with the existing three-dimensional filtering methods. Compared with the original experimental restoration graph, the proposed method reduces the noise figure and edge ambiguity by 34.25% and 6.86%, respectively, and the Brisque subjective evaluation was improved by 45.84%.

Key words: computational ghost imaging; block matching algorithm; median filter; three-dimensional weighted filtering; video filtering

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