The image used in the demo can be found in the following link:
You may cite it in your paper. Thanks a lot.
@article{shi2019no,
title={No-reference light field image quality assessment based on spatial-angular measurement},
author={Shi, Likun and Zhou, Wei and Chen, Zhibo and Zhang, Jinglin},
journal={IEEE Transactions on Circuits and Systems for Video Technology},
volume={30},
number={11},
pages={4114--4128},
year={2019},
publisher={IEEE}
}