# Same as default.yaml but with the BiRefNet segmentation backend instead of
# anime-seg. BiRefNet is a general salient-object segmenter (not anime-specific),
# so it can find subjects anime-seg misses. It ships custom modelling code, so it
# needs trust_remote_code (handled in code) plus timm / einops / kornia, and the
# first run downloads weights from HuggingFace (set HF_ENDPOINT behind a firewall).
screen_color: null

model:
  model_name: hustvl/vitmatte-base-composition-1k
  device: cuda
  matting_method: vitmatte
  fallback_to_chroma_alpha: false

segmentation:
  enabled: true
  backend: birefnet
  model_name: ZhengPeng7/BiRefNet
  device: cuda
  input_size: 1024

trimap:
  sure_bg_threshold: 0.92
  sure_fg_threshold: 0.12
  unknown_radius_ratio: 0.012
  fg_safe_radius_ratio: 0.006
  seg_core_threshold: 0.60
  seg_loose_threshold: 0.08
  mode: directional
  seg_low: 0.15
  bg_hue_proj_min: 4.0

alpha_post:
  chroma_suppress: true
  chroma_suppress_bg_low: 0.35
  chroma_suppress_bg_high: 0.80
  chroma_suppress_strength: 1.0

foreground:
  enabled: true
  method: ml
  fallback_to_unmix: true
  ml_regularization: 0.00001
  edge_low: 0.005
  edge_high: 0.995
  min_unmix_alpha: 0.08
  unmix_strength: 0.70
  local_strength: 0.45
  local_blur_radius: 11
  local_alpha_threshold: 0.92
  local_bg_confidence_max: 0.20
  green_excess_margin: 0.015
  bg_confidence_weight: 0.70

despill:
  enabled: true
  edge_low: 0.005
  strength: 0.92
  green_excess_margin: 0.015
  edge_expand_radius: 2
  alpha_weight_floor: 0.35
  color_margin_lab: 4.0