NormalMapAI指南
Logo / 图标透明 PNG（去黑底或白底）
去黑底/白底做透明 Logo，再可选送入贴图工具。
正文目前仍为英文技术原文；标题与摘要已中文化。可先打开相关工具实操。
步骤
- Open the Transparent PNG tool and upload a logo or icon on black or white, or start from a demo sample.
- Pick Remove black or Remove white. Raise Threshold until the backdrop disappears.
- Raise Feather slightly so edges are not jagged; check the cutout on the checkerboard.
- Download the transparent PNG, or Send to PBR generator if you also need normal / height / roughness maps.
When to use black vs white keying
Match the photo backdrop. Renders on black use Remove black; studio shots on white use Remove white. Mixed grey backdrops need a different workflow (manual mask) and are outside this tool’s scope.
Threshold and feather
Threshold sets how close a pixel must be to pure black or white before it becomes transparent. Feather adds a soft ramp so hairlines and anti-aliased edges do not look cut with scissors.
Using the cutout in 3D
Send the PNG into the homepage PBR editor to build maps for embossed logos on products, decals or UI mock materials. Alpha still composites over any backdrop in engines that read transparency.
常见问题
What is a transparent PNG?
A PNG with an alpha channel so parts of the image can be see-through.
Does this need WebGL?
No. Keying runs on the CPU in your browser.
Are logo files uploaded?
No. Everything stays in browser memory.