#Color to B&W
4 messages in this thread
hi ben, i will shortly be in possession of about 40 24bit Targa images of
trees-the images are processed so color 0,0,0 (trueblack) is both background
and the "holes" between branches and leaves…i need to create 2 color clip
maps of these trees-with all colors except 0,0,0 going to white 255,255,255…i
have v.1.50c of image master-my first upgrade since IP 9 !! boy, things have
changed 🙂 thanks for the help, kevin
There are multiple ways to do this. Map to palette, set 0 to 000 and all
others to 255,255,255. If there are colors _very_ near 0,0,0, this won't
be completely effective… and for that, I'd use the magic wand tools with
entire image as the selection… use RGB (in the set window) instead of
HSV and set it for 0 variance. THat'll do it for sure.
–Ben
…via AutoPilot
thanks ben !
Kevin,
From the tool palette, select "Color keyed selection" and the "Exclude area"
logical button.
Select "Process/Standard adj/HSV Set". Set R, G, B and Var to zero. Click on
"Key on RGB" for faster processing. Click on Done.
Imagemaster will select all pixels which do _not_ fall inside the color range,
i.e. everything except (0,0,0).
The next requester asks what to do with those pixels: Hue should be off, Sat
should be applied with a value of 0, and Lum should be applied with a value of
255. Click on Done.
Presto! Imagemaster whitens everything that wasn't black.
For a softer keying solution, check out the macro I'll be uploading in a few
days. It creates antialiased alpha channels, so you'll lose that jaggy border
when you superimpose those trees.
Blaq!