ZImageTurboProgressiveLockedUpscale (Works with Z Image base too) Comfyui node
This single node revolutionizes image upscaling by preserving composition across stages.
Deep Dive
A new custom ComfyUI node called ZImageTurboProgressiveLockedUpscale simplifies complex Stable Diffusion workflows. It progressively upscales images through multiple stages without using denoise, instead employing 'sigma slicing' to tail the last steps of a schedule (e.g., starting at step 6 of 9). This method preserves the composition from initial generations, preventing detail loss. It uses orthogonal subspace projection to reuse and upscale noise, allowing the model to commit to a structure early.
Why It Matters
It drastically reduces workflow complexity for creators, enabling high-quality, consistent upscaling without manual tuning.