dataset configuration for no-reference dataset

[himkmk]

Thanks for you great work,

I was just wondering how the dataset configuration should be for
datasets without any references, (like urban100).

Currently, I'm simply forwarding a directory with downscaled version of inputs, as in the paper.
But I'm not confident about this since I'm getting SR images full of artifacts.

---

dataroot_in: /Dataset1
dataroot_ref: /Dataset1_downscaledx4
ann_file <-- commented out

[yumingj]

Thanks for your interest in our work!

For datasets without any references, we still need the ann_file. You may construct the ann_files like this. For each line, the first one is the original image name, the second one is the downsampled image name.

We also attached our results in Google Drive. You may have a check. Thanks.