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Table 2 The experiment result for four images using different methods.

From: A New Inverse Halftoning Method Using Reversible Data Hiding for Halftone Images

Images (embedded capacity) PSNR(dB)
  Gaussian filtering* [10] LUT [6] ELUT [7] The proposed method
Lena (26317) 29.40 27.53 28.54 30.11
Pepper (26575) 29.30 27.33 29.29 30.72
Airplane (24985) 28.29 26.94 28.05 29.75
Baboon (8315) 22.22 22.35 22.22 23.99
  1. Gaussian filter .