PSNR is nan when test DIV2K data

[Zency-Sun]

I hava prepared the DIV2K dataset in '/home/zency/桌面/dataset',And I have set the parser.add_argument('--dir_data', type=str, default='/home/zency/桌面/dataset', help='dataset directory')

After Then I run the Demo.sh python main.py --data_test DIV2K --data_range 801-900 --scale 4 --pre_train "../models/edsr_baseline_x4-6b446fab.pt" --test_only --self_ensemble The result is : `Making model... Load the model from ../models/edsr_baseline_x4-6b446fab.pt

Evaluation: 0it [00:00, ?it/s] [DIV2K x4] PSNR: nan (Best: nan @epoch 1) Forward: 0.07s

Saving... Total: 0.07s ` What is Wrong with me ? @sanghyun-son

[Whitecatwarrior]

I have the same problem ,did u solve it？

[Zency-Sun]

I have solved this problem for the following reasons.

1. Place the downloaded (provided by this code base) DIV2K dataset in the "... /dataset" folder. /dataset" folder, then change the default value of --dir_data to ".../dataset". /dataset". For example, if the path of my DIV2K is '/home/zency/desktop/dataset/DIV2K', then the default value of --dir_data is '/home/zency/desktop/dataset'.
2. The DIV2K dataset given by this codebase is archived in a slightly different way from the official dataset. The DIV2K given by this codebase merges the Train and Val of the official dataset, and the program can run successfully using the dataset given by this codebase My problem has been solved and I will close the issue

[Wanghanying]

@Zency-Sun this link is invalid now, https://cv.snu.ac.kr/research/EDSR/DIV2K.tar, can you please show me what is it look like after decompressing it

[Zency-Sun]

@Zency-Sun this link is invalid now, https://cv.snu.ac.kr/research/EDSR/DIV2K.tar, can you please show me what is it look like after decompressing it

You can find the answer here：https://github.com/XPixelGroup/BasicSR/blob/master/docs/DatasetPreparation.md#DIV2K