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GFPGAN-V1.3-whole-image
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num_gpu: 1
manual_seed: 0
is_train: True
dist: False

# network structures
network_g:
  type: GFPGANv1
  out_size: 512
  num_style_feat: 512
  channel_multiplier: 1
  resample_kernel: [1, 3, 3, 1]
  decoder_load_path: ~
  fix_decoder: true
  num_mlp: 8
  lr_mlp: 0.01
  input_is_latent: true
  different_w: true
  narrow: 0.5
  sft_half: true

network_d:
  type: StyleGAN2Discriminator
  out_size: 512
  channel_multiplier: 1
  resample_kernel: [1, 3, 3, 1]

network_d_left_eye:
  type: FacialComponentDiscriminator

network_d_right_eye:
  type: FacialComponentDiscriminator

network_d_mouth:
  type: FacialComponentDiscriminator

network_identity:
  type: ResNetArcFace
  block: IRBlock
  layers: [2, 2, 2, 2]
  use_se: False

# path
path:
  pretrain_network_g: ~
  param_key_g: params_ema
  strict_load_g: ~
  pretrain_network_d: ~
  pretrain_network_d_left_eye: ~
  pretrain_network_d_right_eye: ~
  pretrain_network_d_mouth: ~
  pretrain_network_identity: ~
  # resume
  resume_state: ~
  ignore_resume_networks: ['network_identity']

# training settings
train:
  optim_g:
    type: Adam
    lr: !!float 2e-3
  optim_d:
    type: Adam
    lr: !!float 2e-3
  optim_component:
    type: Adam
    lr: !!float 2e-3

  scheduler:
    type: MultiStepLR
    milestones: [600000, 700000]
    gamma: 0.5

  total_iter: 800000
  warmup_iter: -1  # no warm up

  # losses
  # pixel loss
  pixel_opt:
    type: L1Loss
    loss_weight: !!float 1e-1
    reduction: mean
  # L1 loss used in pyramid loss, component style loss and identity loss
  L1_opt:
    type: L1Loss
    loss_weight: 1
    reduction: mean

  # image pyramid loss
  pyramid_loss_weight: 1
  remove_pyramid_loss: 50000
  # 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
    style_weight: 50
    range_norm: true
    criterion: l1
  # gan loss
  gan_opt:
    type: GANLoss
    gan_type: wgan_softplus
    loss_weight: !!float 1e-1
  # r1 regularization for discriminator
  r1_reg_weight: 10
  # facial component loss
  gan_component_opt:
    type: GANLoss
    gan_type: vanilla
    real_label_val: 1.0
    fake_label_val: 0.0
    loss_weight: !!float 1
  comp_style_weight: 200
  # identity loss
  identity_weight: 10

  net_d_iters: 1
  net_d_init_iters: 0
  net_d_reg_every: 1

# validation settings
val:
  val_freq: !!float 5e3
  save_img: True
  use_pbar: True

  metrics:
    psnr: # metric name
      type: calculate_psnr
      crop_border: 0
      test_y_channel: false