best way to separate line drawing from white?

[furushil]

Does anyone know, if there is a quick or any way in TVPaint to separate a black line drawing from a white background? The line drawing and white background are on one layer (e.g. imported jpg). I want to have the white replaced with alpha.

[neonnoodle]

FX -> Scan Cleaner is for precisely this purpose.

[furushil]

more than perfect thank you !