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In this paper, we propose a trained perceptually transform for quality assessment of high dynamic range (HDR) images and video. The transform is used to convert absolute luminance values found in HDR images into perceptually uniform units, which can be used with any standard-dynamic-range metric. The new transform is derived by fitting the parameters of a previously proposed perceptual encoding function to 4 different HDR subjective quality assessment datasets using Bayesian optimization. Thedoi:10.1109/icip.2018.8451207 dblp:conf/icip/YePM18 fatcat:b4lej4rzfjdjte3wo5pvu547ce