Subjective quality assessment database of HDR images compressed with JPEG XT


You can download all original/decoded image files and raw/processed subjective scores from the following FTP (please use dedicated FTP clients, such as FileZilla or FireFTP):

FTP address:
Password: ohsh9jah4T
The dataset can be found in the folder HDRiXT. The total size of the dataset is about 3.1 GB.
If you use this dataset in your research, we kindly ask you to reference the following paper and URL link of this website:
You may also check the above paper for some other helpful information.
In case of any problems or questions, please send an email to philippe.hanhart (at)

Permission is hereby granted, without written agreement and without license or royalty fees, to use, copy, modify, and distribute the data provided and its documentation for research purpose only. The data provided may not be commercially distributed. In no event shall the Ecole Polytechnique Fédérale de Lausanne (EPFL) be liable to any party for direct, indirect, special, incidental, or consequential damages arising out of the use of the data and its documentation. The Ecole Polytechnique Fédérale de Lausanne (EPFL) specifically disclaims any warranties. The data provided hereunder is on an “as is” basis and the Ecole Polytechnique Fédérale de Lausanne (EPFL) has no obligation to provide maintenance, support, updates, enhancements, or modifications.