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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: IEEE Trans Image Process. 2017 Nov 9;27(2):938–948. doi: 10.1109/TIP.2017.2771449

Fig. 7.

Fig. 7

The cumulative naturalness score versus the increasing GMRVL value. NPIE-MLLS maintains upward trend as the GMRVL value increases, but MSR, GUM, and FHRPHS plateau when the GMRVL value reaches certain levels.