TY  - JOUR
AU  - Xim Cerda-Company
AU  - C. Alejandro Parraga
AU  - Xavier Otazu
PY  - 2018//
TI  - Which tone-mapping operator is the best? A comparative study of perceptual quality
T2  - JOSA A
JO  - Journal of the Optical Society of America A
SP  - 626
EP  - 638
VL  - 35
IS  - 4
N2  - Tone-mapping operators (TMO) are designed to generate perceptually similar low-dynamic range images from high-dynamic range ones. We studied the performance of fifteen TMOs in two psychophysical experiments where observers compared the digitally-generated tone-mapped images to their corresponding physical scenes. All experiments were performed in a controlled environment and the setups weredesigned to emphasize different image properties: in the first experiment we evaluated the local relationships among intensity-levels, and in the second one we evaluated global visual appearance among physical scenes and tone-mapped images, which were presented side by side. We ranked the TMOs accordingto how well they reproduced the results obtained in the physical scene. Our results show that ranking position clearly depends on the adopted evaluation criteria, which implies that, in general, these tone-mapping algorithms consider either local or global image attributes but rarely both. Regarding thequestion of which TMO is the best, KimKautz [1] and Krawczyk [2] obtained the better results across the different experiments. We conclude that a more thorough and standardized evaluation criteria is needed to study all the characteristics of TMOs, as there is ample room for improvement in future developments.
UR  - https://www.osapublishing.org/josaa/abstract.cfm?uri=josaa-35-4-626
L1  - http://refbase.cvc.uab.es/files/CPO2018.pdf
UR  - http://dx.doi.org/10.1364/JOSAA.35.000626
N1  - NEUROBIT; 600.120; 600.128
ID  - Xim Cerda-Company2018
ER  -