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Table 6 Comparison of the standard deviation σ, the mean μ, and the entropy \(\mathcal {H}\) of the original and processed “iris” images

From: A generalized gamma correction algorithm based on the SLIP model

  Original SLIP SLIP SLIP LCS CLAHE LCC AGC PLR
   γ=0.8γ 0 γ=γ 0 γ=1.2γ 0      
σ 0.3511 0.2159 0.2452 0.2693 0.3272 0.3337 0.3516 0.3885 0.2774
μ 0.2864 0.3558 0.3384 0.3249 0.3133 0.3204 0.3049 0.3672 0.3578
\(\mathcal {H}\) 6.6263 6.5340 6.6161 6.6718 6.4636 7.0151 7.2611 6.5198 6.6713