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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. 5.

Fig. 5

Statistics of 1158 high-quality images’ lightness attributes in different layers. (a) Average lightness. (b) Lightness range. Error bars indicate the standard error of the mean.