lmdb has no valid image file about trainner

[MHketbi]

i tried

    dataroot_B: ['C:\ManduScale\OPScale\DataSet\FourthSet\HR1\HR1.lmdb',
    'C:\ManduScale\OPScale\DataSet\FourthSet\HR1\HR1.lmdb']
    dataroot_A: ['C:\ManduScale\OPScale\DataSet\FourthSet\LR1\LR1a.lmdb',
    'C:\ManduScale\OPScale\DataSet\FourthSet\LR1\LR1b.lmdb']

and i still game error
AssertionError: C:\ManduScale\OPScale\DataSet\FourthSet\LR1\LR1a.lmdb has no valid image file

[MHketbi]

the only thing that works is specifying 1 HR.lmdb and 1 LR.lmdb and i cant use it like the above example.

can this be fixed?

[victorca25]

Hello! When using lmdb, only one lmdb for LR (input) images and one for HR (target) images is supported. Also, when using lmdb, it is only supported if both the LR and HR are a lmdb db.

Technically, it would be possible to have multiple DBs simultaneously, but it adds complexity and doesn't adds benefits during training. In this case I would recommend to create each of the lmdb with all the images that will be used during training, instead of multiple separate ones.