Denoise + upscale: luma grain, chroma noise, and watercolor smear
`denoise-upscale` fits high-ISO night shots, surveillance stills, and film scans. Treat luma and chroma noise separately—maxing both turns concrete walls into watercolor. JPEGs that bounced through social apps do not behave like RAW exports, so presets are not portable.
Denoise-upscale steps
- In `denoise-upscale`, tag whether the source is RAW-derived, in-camera JPEG, or multiply recompressed so you pick conservative versus aggressive cleanup.
- Inspect metal speculars, window mullions, and thin rails for breaks; watch shadows for banding or rainbow fringes.
- For print, a little honest grain often beats perfectly flat plastic; what glows on a monitor can mud on paper.
Denoise-upscale Q&A
The frame looks like a cartoon smear—what happened?
Pull global strength back or split frequency work, and confirm you are not stacking multiple heavy passes.
Chroma speckle remains but detail is gone?
Attack chroma first, luma second; avoid one slider slammed to maximum.
Sharpen before denoise for speed?
Prefer denoise → upscale → gentle sharpen; pre-sharpening locks noise into edges.
Before publishing `denoise-upscale` assets externally, which compliance checks are mandatory beyond visual quality?
Start with "define size thresholds explicitly", "match platform upload rules", and "document post-release reviews", then explicitly verify "stale-cache replacement lag" and "unexpected thumbnail crop" before release approval.
Under deadline pressure, how should teams balance speed and stability in `denoise-upscale` processing?
Start with "normalize naming conventions", "run channel dry-runs", and "document post-release reviews", then explicitly verify "rendering drift across devices" and "whitelist format blocking" before release approval.