Krea 2 Ultimate Face & Background Detailer + SeedVR2 4K Upscale

High-quality Krea 2 pipeline focused on extreme facial and background detail recovery, followed by a powerful SeedVR2 4K upscale.

This workflow is designed for users who want maximum sharpness and realism from Krea 2 generations without complicated setups.

What this workflow does:

1. Text-to-Image generation with Krea 2 architecture
2. 1st SeedVR2 pass → deblur + detail recovery
3. SAM3 segmentation (Face + Hair)
4. Dedicated Face Detailer (low denoise, high precision)
5. Dedicated Background Detailer (separate density control)
6. Final SeedVR2 4K Upscale (up to 4096px)
7. Side-by-side comparison (before vs after upscale)

Key Features

• Separate density controls for Face and Background
• Clean and organized node groups
• Batch / Loop support
• Image Comparer included
• Optimized for high detail and natural skin texture
• Ready for character reference sheets or high-quality portraits

Recommended Use Cases

• Character reference sheets
• High-detail portraits
• Realistic / semi-realistic images
• Face enhancement + full scene refinement
• Final 4K delivery

Required Custom Nodes

• ComfyUI-Impact-Pack (DetailerForEach)
• ComfyUI-KJNodes (Set/Get nodes)
• rgthree-comfy
• Easy-Use (sam3, forLoop, etc.)
• SeedVR2 nodes
• ComfyUI-Image-Resize / WAS Node Suite (or equivalent)

Models needed

• Krea 2 compatible UNET
• Qwen3-VL / Lumina2 CLIP
• SeedVR2 DiT + VAE (seedvr2_ema_7b_fp16 + ema_vae_fp16)
• SAM3 model (sam3.pt)
• Optional LoRAs for style/identity

Tips

• Start with Face Density around 0.08 ~ 0.15
• Background Density around 0.12 ~ 0.25
• Keep the first SeedVR2 pass at moderate resolution for better detail recovery
• Use the Image Comparer to check the quality jump after the final 4K upscale