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# general settings | |
name: finetune_RealESRGANx4plus_400k_pairdata | |
model_type: RealESRGANModel | |
scale: 4 | |
num_gpu: auto | |
manual_seed: 0 | |
# USM the ground-truth | |
l1_gt_usm: True | |
percep_gt_usm: True | |
gan_gt_usm: False | |
high_order_degradation: False # do not use the high-order degradation generation process | |
# dataset and data loader settings | |
datasets: | |
train: | |
name: DIV2K | |
type: RealESRGANPairedDataset | |
dataroot_gt: datasets/DF2K | |
dataroot_lq: datasets/DF2K | |
meta_info: datasets/DF2K/meta_info/meta_info_DIV2K_sub_pair.txt | |
io_backend: | |
type: disk | |
gt_size: 256 | |
use_hflip: True | |
use_rot: False | |
# data loader | |
use_shuffle: true | |
num_worker_per_gpu: 5 | |
batch_size_per_gpu: 12 | |
dataset_enlarge_ratio: 1 | |
prefetch_mode: ~ | |
# Uncomment these for validation | |
# val: | |
# name: validation | |
# type: PairedImageDataset | |
# dataroot_gt: path_to_gt | |
# dataroot_lq: path_to_lq | |
# io_backend: | |
# type: disk | |
# network structures | |
network_g: | |
type: RRDBNet | |
num_in_ch: 3 | |
num_out_ch: 3 | |
num_feat: 64 | |
num_block: 23 | |
num_grow_ch: 32 | |
network_d: | |
type: UNetDiscriminatorSN | |
num_in_ch: 3 | |
num_feat: 64 | |
skip_connection: True | |
# path | |
path: | |
# use the pre-trained Real-ESRNet model | |
pretrain_network_g: experiments/pretrained_models/RealESRNet_x4plus.pth | |
param_key_g: params_ema | |
strict_load_g: true | |
pretrain_network_d: experiments/pretrained_models/RealESRGAN_x4plus_netD.pth | |
param_key_d: params | |
strict_load_d: true | |
resume_state: ~ | |
# training settings | |
train: | |
ema_decay: 0.999 | |
optim_g: | |
type: Adam | |
lr: !!float 1e-4 | |
weight_decay: 0 | |
betas: [0.9, 0.99] | |
optim_d: | |
type: Adam | |
lr: !!float 1e-4 | |
weight_decay: 0 | |
betas: [0.9, 0.99] | |
scheduler: | |
type: MultiStepLR | |
milestones: [400000] | |
gamma: 0.5 | |
total_iter: 400000 | |
warmup_iter: -1 # no warm up | |
# losses | |
pixel_opt: | |
type: L1Loss | |
loss_weight: 1.0 | |
reduction: mean | |
# perceptual loss (content and style losses) | |
perceptual_opt: | |
type: PerceptualLoss | |
layer_weights: | |
# before relu | |
'conv1_2': 0.1 | |
'conv2_2': 0.1 | |
'conv3_4': 1 | |
'conv4_4': 1 | |
'conv5_4': 1 | |
vgg_type: vgg19 | |
use_input_norm: true | |
perceptual_weight: !!float 1.0 | |
style_weight: 0 | |
range_norm: false | |
criterion: l1 | |
# gan loss | |
gan_opt: | |
type: GANLoss | |
gan_type: vanilla | |
real_label_val: 1.0 | |
fake_label_val: 0.0 | |
loss_weight: !!float 1e-1 | |
net_d_iters: 1 | |
net_d_init_iters: 0 | |
# Uncomment these for validation | |
# validation settings | |
# val: | |
# val_freq: !!float 5e3 | |
# save_img: True | |
# metrics: | |
# psnr: # metric name | |
# type: calculate_psnr | |
# crop_border: 4 | |
# test_y_channel: false | |
# logging settings | |
logger: | |
print_freq: 100 | |
save_checkpoint_freq: !!float 5e3 | |
use_tb_logger: true | |
wandb: | |
project: ~ | |
resume_id: ~ | |
# dist training settings | |
dist_params: | |
backend: nccl | |
port: 29500 | |