First Absolute Moment and Variance Estimators Used in JPEG Reconstruction

Reconstructed Quantized Coefficients Modeled with Generalized Gaussian Distribution with Exponent 1/3

“…Different models have been applied in [2,16,24]. Based on the observation that the DCT coefficients have a peak at zero and decrease exponentially, Ahumada et al [2] made adjustments to the reconstructed coefficients.…”

“…Based on the observation that the DCT coefficients have a peak at zero and decrease exponentially, Ahumada et al [2] made adjustments to the reconstructed coefficients. The reconstruction for Laplace distribution with centroid was presented in [16,24].…”

Modeling the distribution of DCT coefficients for JPEG reconstruction

“…This approach has been presented for different models in [2,26,17]. Ahumada and Horng [2] made adjustments to the reconstructed coefficients based on the observation that the DCT coefficients have a peak at zero and decrease exponentially.…”

“…Ahumada and Horng [2] made adjustments to the reconstructed coefficients based on the observation that the DCT coefficients have a peak at zero and decrease exponentially. In [26,17] the reconstruction for LD with centroid was presented.…”

“…The reconstruction for LD with centroid was presented in [26,17]. Tables 1 and 3 contain the results collected for the estimation of the shape parameters of GGD for two images ''Lenna'' and ''Barbara'', respectively.…”