Smittie's PiD Upscaler Workflow
Description
With this workflow you can upscale low-resolution images (512, 1K) to much higher resolutions (2K, 4K) using Nvidia's PiD (Pixel Diffusion). It is a simple image to image (I2I) workflow.
Install Instructions
1. Update ComfyUI to latest build with PiD support
2. Install all missing custom nodes via the ComfyUI Manager
3. Download all needed models
Diffusion model
For Z-Image or Flux.1 like images in 1K resolution use pid_flux1_1024_to_4096_4step_bf16.safetensors
Text encoder
VAE
Video Instructions
If you don't know what to do, you can watch the Nvidia PiD Tutorial by AI Search. He works with a different workflow, which I have built upon.
Acknowledgement
Most credits goes to the Nvidia, ComfyUI and CivitAI team, as well as kijai and AI Search. Thank you guys!