Would Wu anti-aliasing do you? I know that there's an add-on somewhere at Turbo which implements this (TurboPixels or something like that -- maybe by Michael Wilson). It's for DelphiX but shouldn't be difficult to convert to normal TBitmap. I'm pretty sure that Graphics32 has anti-aliasing (and incidentally, it's waaay faster at some things than TBitmap/TCanvas -- check the demos) too. Are the above any use to you?