Traced bitmap transparence

General discussions about Inkscape.
Scayze
Posts: 1
Joined: Sat Oct 10, 2015 5:14 am

Traced bitmap transparence

Postby Scayze » Sat Oct 10, 2015 5:21 am

G'day everyone
i color-traced a pixel graphic which used half-transparence colors in some parts. after tracing all those halftransparence parts were in full-alpha. is it possible to keep the alpha parts when colortracing bzw. how to i change it back without editing the 32layers the tracing created.
Manu.

User avatar
brynn
Posts: 10309
Joined: Wed Sep 26, 2007 4:34 pm
Location: western USA
Contact:

Re: Traced bitmap transparence

Postby brynn » Sat Oct 10, 2015 5:47 am

If you traced it with Inkscape's Trace Bitmap, then no, you won't be able to get transparency with the tracing. You will have to edit the trace results if you want to replace the transparency. There is a way to get the same colors with transparency back. I donl't think it's very hard to do. You would just Ungroup the results, and one at a time, select each object which color needs to be fixed, and edit the color.

At this point, however, someone else will have to explain how to get the color, because I don't know how. I've read how to do it before, but unfortunately don't remember.

However, if you traced it with some other trace engine, I'm not sure. Maybe other auto-tracers do provide transparency? How did you trace it?

Moini
Posts: 3381
Joined: Mon Oct 05, 2015 10:44 am

Re: Traced bitmap transparence

Postby Moini » Sat Oct 10, 2015 5:49 am

Hi Scayze,

no, this isn't supported currently.
You can apply the colors back quickly using the dropper tool, though (if the objects in your scan don't overlap - you need to scan with 'Stack scans' unchecked):

- Select one scan layer
- Switch to dropper tool
- in its toolbar, select both pick and assign opacity
- click on the color in your raster image (make sure the image is on a white background)
- Repeat until all layers are done.

(Ah - Brynn, you answered in the mean time ;) - sorry for repetition!)
Something doesn't work? - Keeping an eye on the status bar can save you a lot of time!

Inkscape FAQ - Learning Resources - Website with tutorials (German and English)

User avatar
brynn
Posts: 10309
Joined: Wed Sep 26, 2007 4:34 pm
Location: western USA
Contact:

Re: Traced bitmap transparence

Postby brynn » Sat Oct 10, 2015 6:03 am

yeah, we get these simultaneous answers from time to time. A lot of time I'm writing up a long answer, and by the time I finally finish, someone else has posted a short version of the answer.

Moini
Posts: 3381
Joined: Mon Oct 05, 2015 10:44 am

Re: Traced bitmap transparence

Postby Moini » Sat Oct 10, 2015 10:32 am

@brynn: I think in this case, we were kind of complementing each other's answer ;)
Something doesn't work? - Keeping an eye on the status bar can save you a lot of time!

Inkscape FAQ - Learning Resources - Website with tutorials (German and English)

Summerjones
Posts: 1
Joined: Fri Oct 21, 2016 12:52 am

Re: Traced bitmap transparence

Postby Summerjones » Sat Oct 22, 2016 1:14 am

Scayze wrote:G'day everyone
I color-traced a pixel graphic which used half-transparence colors in some parts. after tracing all those halftransparence parts were in full-alpha. is it possible to keep the alpha parts when colortracing bzw. how to i change it back without editing the 32layers the tracing created.
Manu.


I know it's a old thread but I'm new at this and was having similar problems...
I guess I'll be able to work through it with your information :)
Any how i'm going to keep looking for more information until I master this!


Return to “General Discussions”