1. Workflow Overview

This workflow specializes in professional portrait skin restoration using SUPIR plugin, featuring:

• Blemish Removal: Eliminates noise/wrinkles

• Texture Enhancement: Amplifies pores/gloss details

• AI Super-Resolution: Upscales to 2K/4K

Core Models:

• dreamshaperXL_lightningDPMSDE: Base generator

• SUPIR-v0Q: Skin-specialized model

• 4xFFHQDAT + 1x-ITF-SkinDiffDetail: 2-stage upscale

2. Components Breakdown

Key Nodes:

1. SUPIR Core Trio

   • SUPIR_model_loader_v2: Loads SUPIR model

   • SUPIR_first_stage: Pre-denoising (512x512)

   • SUPIR_sample: Main restoration (RestoreDPMPP2MSampler)

2. Auxiliary Modules

   • ReActorRestoreFace: Face-specific repair

   • ColorAdjust(FaceParsing): Skin tone balance

   • ColorMatch: Global color correction

3. Upscale Pipeline

   • Stage1: 4xFFHQDAT (2x)

   • Stage2: 1x-ITF-SkinDiffDetail (skin detail)

Dependencies:

• Required downloads:

  # SUPIR model
  wget https://huggingface.co/SUPIR/models/resolve/main/SUPIR-v0Q.ckpt -P ComfyUI/models/supir/
  # GFPGAN model
  wget https://github.com/TencentARC/GFPGAN/releases/download/v1.3.0/GFPGANv1.3.pth -P ComfyUI/models/facerestore/

3. Workflow Structure

Processing Flow:

1. Pre-Processing
   Input → ReActorRestoreFace → ImageResize+

2. SUPIR Restoration
   Denoise → Prompt conditioning → Diffusion sampling

3. Post-Processing
   Upscale chain → Face refinement → Color matching

Critical Parameters:

• Denoise strength: 1.5

• Sampling steps: 10

4. Inputs & Outputs

Input Requirements:

• Format: PNG/JPG (≥512x512)

• Content: Front-facing portraits

Outputs:

• Default resolution: 2048x2048

• Includes: Before/after comparison

5. Notes

• Hardware:

  • VRAM: ≥12GB (for 2048x2048)

  • Recommended: NVIDIA 30/40 series

• Troubleshooting:（Python）

  # Error: SUPIR_VAE not found
  Fix: Verify model path is ComfyUI/models/supir/
  
  # Error: Face detection failed
  Fix: Decrease "Fidelity Scale" in ReActor

• Optimization:

  1. Enable PurgeVRAM for batch processing

  2. Use VAEEncodeTiled for HD outputs