Tag
“upscaling”
3 posts
- Technical Deep Dives··8 min read
Why Sharpening a Cutout Draws a Halo Around Fur
Upscale a cutout of a long-haired pet and a bright rim appears along the fur. The model did not do it. An alpha-blind sharpening pass did, by averaging in the black that sits behind every transparent pixel. Here is the mechanism, the fix, and exactly what the numbers behind it were measured on.
Technical Deep Dives··8 min readWhy AI Upscalers Leave Seams and Soft Edges, And How We Fixed Ours
An AI upscaler can sharpen a photo beautifully and still leave a faint grid across it, or a crisp subject with a strangely soft outline. Both are avoidable. Here is what actually causes them, and the two fixes we shipped.
Tutorials··8 min readYou Upscaled to 4x and It's Still Soft: Pick the Right Source Mode
You set the upscaler to 4x and the result still looks soft. Usually the fix is not more sharpening. It is telling the tool what kind of image it is looking at. A practical guide to the Source modes, and the honest limit no upscaler can beat.