Enhancement of JPEG-Compressed Images by Re-application of JPEG

@article{Nosratinia2001EnhancementOJ,
  title={Enhancement of JPEG-Compressed Images by Re-application of JPEG},
  author={Aria Nosratinia},
  journal={VLSI Signal Processing},
  year={2001},
  volume={27},
  pages={69-79}
}
A novel method is proposed for post-processing of JPEG-encoded images, in order to reduce coding artifacts and enhance visual quality. Our method simply re-applies JPEG to the shifted versions of the already-compressed image, and forms an average. This approach, despite its simplicity, offers better performance than other known methods, including those based on nonlinear filtering, POCS, and redundant wavelets. 
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