Properly replacing a colour in a simple bitmap
I have a low-res bitmap. It has a dark grey background with a plain white icon. The transitional pixels are various shades of grey.
I want to make the dark grey into a bright blue, leave the white white, and have the transitional pixels changed to maintain their respective "in between" values.
I do have Photoshop CS2 but I though Xara was more likely to be able to do this. Can anyone help?
Thanks :)
Re: Properly replacing a colour in a simple bitmap
Xara Designer Pro X has a Color Select/Erase Tool that can do this, though to be honest, the results vary.
Re: Properly replacing a colour in a simple bitmap
Aw I don't seem to have that tool in PGD6. Any other ways? Seems like this must be something people do all the time.
Thanks
Re: Properly replacing a colour in a simple bitmap
Re: Properly replacing a colour in a simple bitmap
you can try mehdi eraser in the live effects
John made a quick tutorial here:
http://www.talkgraphics.com/showthre...547#post328547
1 Attachment(s)
Re: Properly replacing a colour in a simple bitmap
Attachment 96785
:) and I want the dark grey to be 0050ef
Cheers
Re: Properly replacing a colour in a simple bitmap
black and white is easy - to replace the white you give the bitmap a stained glass transparency put a colour rectangle behind select both and make a true colour bitmap copy
to replace black just invert the bitmap first
Re: Properly replacing a colour in a simple bitmap
ah - your edit makes it a bit more complicated :)
Re: Properly replacing a colour in a simple bitmap
Quote:
Originally Posted by
handrawn
ah - your edit makes it a bit more complicated :)
Thanks, that solution works well :)
As you say though.... how on Earth do I tell Xara to use a specific blue? I've never seen such a bad colour selection dialogue. I can't even specify RGB values :/
Re: Properly replacing a colour in a simple bitmap
ok
select the bitmap - click on white on the colour bar and select 'set contone dark colour' - then click on black on color line and select 'set contone light colour' - bitmap is now inverted
keep your bitmap selected and go to bitmap gallery and click on the original bitmap there and then the 'transp' button [transparency] - you will now have an object that is single colour and alpha - use the colour editor to set it to your grey value, and then put a white rectangle behind - select both and make bitmap copy
edit - ok you used the mehdi method :)