factors = [1, 2, 4]
pads = [32, 64, 128, 256, 512]
gen_scope = "gen"
dis_scope = "dis"
outputs_prefix = "output_"
lr_key = "lr"
hr_key = "hr"
lr_input_name = "lr_input"
hr_input_name = "hr_input"
pretrain_key = "pretrain"
train_key = "train"
epoch_key = "per_epoch"
