cutting out a logo from white background

[Turan]

Sorry, in the time it took me to try it out - I'd missed Drwyd's excellent example - the trick is creating the bitmap in 2 colour depth (I have not looked yet, but it was probably mention above).

Turan

[handrawn]

you can take it up to 256 colors and it works

yes - thanks again Drwyd

it works in xtreme 2 with true colour + alpha mask [ie default bitmap copy setting] - reckon that is where I went wrong before

[Drwyd]

Glad I could help

Under some conditions a small fringe is left. To solve this the bitmap can be reduced in size by a couple of pixels before applying it as a tranparency.

Drwyd.

[handrawn]

... and in fact true color

...and in fact true color + alpha too, but it does not show unless the actual bitmap has graduated transparency [unlike xtreme 2], so I missed that completely in the feather example - DOH!

that xtreme 2 and xtreme 5 handle the true color + alpha transparency differently does not seem surprising on reflection, bearing in mind the changes made in the bitmap handling...

this has taken this thread away from white background removal and into transparency in general so sorry for that...

[molucca]

steve j,

I didn't use contone coloring with the feather.

Rich

[handrawn]

Hi Rich

yes - sorry, I did note you used the levels to turn the mask black - just got lost in my muddle with the TC+A

and I see that doing this with levels can minimise the saturation wash out that tends to happen if you use the contone route