Upscaling and Face Fix

Upscaling and Face Fix

Upscale (tiled diffusion)

MooshieUI upscales with MultiDiffusion tiled diffusion, the same approach used by SwarmUI. There is no slow tile-by-tile processing; all tiles are denoised together each step for seamless results.

The tiled diffusion node is also published as a standalone ComfyUI custom node for use outside MooshieUI: ComfyUI-MooshieTiledDiffusion. It is the same node MooshieUI uses, so it supports Anima (COSMOS) and 5D latents, MultiDiffusion and SpotDiffusion, and txt2img, img2img, and inpainting, and it works above 2.4 MP where a single pass shows artifacts. Install it with ComfyUI-Manager (search Mooshie Tiled Diffusion), the Comfy Registry (comfyui-mooshietileddiffusion), or by cloning into custom_nodes. It is a one-off export with no promise of ongoing maintenance; the canonical source stays in MooshieUI.

Methods

• Model-based - uses a dedicated upscale model (for example Omni-SR). Scale is fixed by the model (2x, 4x, etc.).
• Algorithmic (Lanczos) - fast pixel-space upscaling with an adjustable 1 to 4x scale.

Recommended upscale models (auto-download)

When you pick a recommended model that is not installed, MooshieUI downloads it to ComfyUI's models/upscale_models/:

Model	Scale	Source
Omni 2x	2x	Acly/Omni-SR
Omni 4x	4x	Acly/Omni-SR

Any other models in models/upscale_models/ also appear in the dropdown.

Tiled diffusion options

• Toggle per generation. Recommended for large images and required for Anima (COSMOS) models.
• Adjustable tile size (256 to 2048px).
• Cosine-feathered blending for seamless boundaries.
• Supports both MultiDiffusion and SpotDiffusion algorithms.

Guidance nodes (anti-hallucination)

• Soft Guidance (CFG Rescale) - toggle in Upscale Settings to reduce extra hands/objects at low denoise. Adjustable multiplier (0.0 to 1.0, default 0.4).
• Smart Guidance (positive-biased adaptive) - toggle in Sampler Settings to bias the model toward positive conditioning across all passes.

These are custom nodes (MooshieSoftGuidance, MooshieSmartGuidance) installed automatically.

Upscale sampler controls

• Denoise - 0 to 1 (lower preserves more of the original).
• Steps - 1 to 50.

One-click upscale

Hover any generated image and click Upscale to upscale the last output without changing your settings.

Face Fix (face detailer)

Enable a post-generation pass that detects faces and re-denoises them at higher resolution, then composites them back with smooth cosine-falloff blending. No Impact Pack dependency; it is a self-contained node.

Controls in Face Fix Settings:

• Detector model - choose from recommended detectors (for example an Anzhc face segmentation model or face_yolov8n). Missing models are auto-downloaded with SHA256 verification, and the ultralytics Python package is installed automatically.
• Denoise - 0 to 1.
• Steps - 1 to 50.
• Guide size - 256 to 1024px.
• Auto-prompt toggle.