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one bit transparency
#1
Hi,

in CorelDraw, it is (was?) possible to render a one bit (b&w) image as an arbitrary solid colour for black and transparent for white.  Note that this involved no blending or increase in bit width of the image.

I'm trying to do the same thing with GIMP and Inkscape (which sadly lacks this incredibly useful and probably not too difficult to implement feature).

So far all I've managed is an RGBA exported to png with a constant RGB and a high contrast alpha.  It seems to be impossible to prevent some degree of 'anti-aliasing'.

I can import this into Inkscape and lay it over a coloured background, but when I export it,  it's alpha blended, even though I didn't ask for that.  Again, it seems to be impossible to prevent 'anti-aliasing'.

Also, for some reason, Inkscape adds a transparency checker pattern to the background (which is not visible in the edit window).

Surely there's a way to create a one bit transparency in GIMP and render it in colour in Inkscape, then export it without alpha or checkers!

Even better would probably be to do it all in GIMP, but I still need the absence of blending, just the one bit transparency.
UPDATE: I've figured out how to do this in GIMP, but I'd still really like to know if and how I can create and export a one bit colour + transparency image.


Heelp me....  heelp meee...   pleeezzzzz.....

bitrat
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Messages In This Thread
one bit transparency - by bitrat - 11-05-2022, 02:37 AM
RE: one bit transparency - by denzjos - 11-05-2022, 09:16 AM
RE: one bit transparency - by bitrat - 11-05-2022, 07:28 PM
RE: one bit transparency - by rich2005 - 11-05-2022, 08:40 PM
RE: one bit transparency - by bitrat - 11-05-2022, 10:34 PM
RE: one bit transparency - by Ofnuts - 11-06-2022, 12:44 AM
RE: one bit transparency - by bitrat - 11-06-2022, 07:04 AM
RE: one bit transparency - by Ofnuts - 11-06-2022, 08:49 AM
RE: one bit transparency - by bitrat - 11-07-2022, 01:42 AM
RE: one bit transparency - by rich2005 - 11-06-2022, 11:29 AM
RE: one bit transparency - by bitrat - 11-07-2022, 04:59 AM
RE: one bit transparency - by denzjos - 11-07-2022, 09:51 AM
RE: one bit transparency - by bitrat - 11-07-2022, 08:40 PM
RE: one bit transparency - by bitrat - 11-07-2022, 11:59 PM
RE: one bit transparency - by denzjos - 11-08-2022, 09:51 AM

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