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How to create custom color eraser?

Posted: 14 Dec 2011, 10:53
by Soom
I use the color erasers a lot. On the default TVP panels there are only erasers for blue, red, green, orange and black. How can I make other erasers with custom colors? Or how can I make a tool, that would grab any current color and erase it?
I tried editing the existing tools, but then I saw scripts with bunch of digits, and I get into a stupor as soon as I see those :/
Any help on that?
Thanks

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 11:23
by slowtiger
Uhm, I think there's a technical restriction to a colour eraser: it only works good if it is restricted to one or two channels. So the possible eraseable colours would be R G B, then orange, green, and purple. You can't erase any brown because that would erase all 3 channels.

Technicians: am I right here?

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 11:24
by Elodie
Yes you are :)

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 11:28
by Soom
Hmm.. Ok - is it possible to erase only white? well, I guess no.... :(
Other question then - can I select a specific color, like in Photohsop?

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 11:29
by slowtiger
Erase white > FX > scan cleaner. This changes all white into transparent, and you may fill that with any colour. Use mode "behind".

Select a colour: use the magic wand (select tool). The numbers are different from photoshop, but the results are the same.

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 11:40
by Elodie
Hey Soom (nice animated gif ^^),
Other question then - can I select a specific color, like in Photohsop?
It depends on what you want to do. Can you explain more (or show us images ?)

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 12:17
by Soom
Elodie wrote: It depends on what you want to do. Can you explain more (or show us images ?)
Hi Elodie
Let's say I want to select a specific color and erase it. Or, select it and paint over the selection. For example - see the image I attached - I want to select all the light-blue color and paint inside the selection. The only way I could do that is use the Magic Wand, but see how many other colors are painted over the blue color, so I cannot select it in one click, I will need to go patch by patch, and it's really not efficient...
In Photoshop there is a simple function "Select Color". In TVP there is no way to do that... (I know TVP is not Photoshop, but IMO this function is necessary for easier painting process)
Or am I missing something?
Picture 3.png
Picture 3.png (72.18 KiB) Viewed 7455 times

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 12:48
by Elodie
Soom wrote: In Photoshop there is a simple function "Select Color". In TVP there is no way to do that... (I know TVP is not Photoshop, but IMO this function is necessary for easier painting process)
Thank you for the explanation, I understand better now. Yes, You're right, such a selection could be interesting. =)

At the moment, I advise you to use the FX "color > color replacer" to proceed with such a change.

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 13:04
by Soom
Thanks Elodie
Should I post is as afeature request?

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 13:16
by Elodie
Yes, you can =)

Who knows what suggestions could bring your request ? :D

Re: How to create custom color eraser?

Posted: 14 Dec 2011, 15:30
by Soom
slowtiger wrote:Erase white > FX > scan cleaner. This changes all white into transparent, and you may fill that with any colour. Use mode "behind".
Thanks, it's a nice FX, but it deletes all the colors, not only white.
slowtiger wrote:Select a colour: use the magic wand (select tool). The numbers are different from photoshop, but the results are the same.
How can I select one color in all the image with a Magic Wand? Photoshop has "Select Color" function for that...