Choosing palette

Deblk · **Joined:** Dec 22, 2011 **Posts:** 399

GIMP Version: 2.8.14
Operating System: Windows
GIMP Experience: New User

Hiya...is there a way to index a photo to my own palette?

jazzon · **Posted:** Mon Feb 01, 2016 7:36 am **(#2)**

I'm no expert on photo manipulation, but I would think this would be quite difficult if it is even possible. Photos use the entire color spectrum, and a palette that large would be quite big.

You could try:
Colors->Desaturate
Colors->Map->Palette map

But the palette has to be defined first.

Deblk · **Joined:** Dec 22, 2011 **Posts:** 399

jazzon wrote:

I'm no expert on photo manipulation, but I would think this would be quite difficult if it is even possible. Photos use the entire color spectrum, and a palette that large would be quite big.

You could try:
Colors->Desaturate
Colors->Map->Palette map

But the palette has to be defined first.

Thanks....I am looking to create a palette like grayscale but in other colours like browns

jazzon · **Posted:** Mon Feb 01, 2016 8:43 am **(#4)**

Hope it helps ya. For that matter I just hope it works, I've never tried it.

Deblk · **Joined:** Dec 22, 2011 **Posts:** 399

jazzon wrote:

Hope it helps ya. For that matter I just hope it works, I've never tried it.

Thanks but don't think that is what I am looking for

SysTemX · **Joined:** Dec 08, 2013 **Posts:** 1088

Maybe this is what you need ...

jazzon · **Posted:** Mon Feb 01, 2016 9:29 am **(#7)**

From the Plug-In Browser/Procedure Browser summary for
Colors->Map->Map To Pallete

Quote:

Recolor the image using colors from the active palette

This plug-in maps the contents of the specified drawable with the active palette. It calculates luminosity of each pixel and replaces the pixel by the palette sample at the corresponding index. A complete black pixel becomes the lowest palette entry, and complete white becomes the highest. Works on both Grayscale and RGB image with/without alpha channel.

If I read this right, your palette would have to have at least 256 colors in it already defined.

If I read Your comments above right, You are trying to make the palette from photo... I misunderstood the first time.

SysTemX should have added a link to that plugin. I found it here
I havent tried it yet, but it sounds like what you want.

SysTemX · **Joined:** Dec 08, 2013 **Posts:** 1088

jazzon wrote:

From the Plug-In Browser/Procedure Browser summary for
Colors->Map->Map To Pallete

Quote:

Recolor the image using colors from the active palette

SysTemX should have added a link to that plugin. I found it here
I havent tried it yet, but it sounds like what you want.

SysTemX is on mobile :bigthup

ATM. You seem to have it under control though.

saulgoode · **Posted:** Mon Feb 01, 2016 9:44 am **(#9)**

"Colors->Map->Set Color Map" ignores luminosity (should that be what you want).

jazzon · **Posted:** Mon Feb 01, 2016 9:47 am **(#10)**

SysTemX wrote:

SysTemX is on mobile :bigthup

ATM. You seem to have it under control though.

I have to piiick ... :rofl

jazzon · **Posted:** Mon Feb 01, 2016 9:56 am **(#11)**

saulgoode wrote:

"Colors->Map->Set Color Map" ignores luminosity (should that be what you want).

This is greyed out for me, as well as the option Image->Mode->Indexed. I assume it is because the current image has LOTS of colors in it. If she uses a photo for here base, wont that have the same issue? (Unless a photo of very few colors/shades...)

Deblk · **Joined:** Dec 22, 2011 **Posts:** 399

Thanks guys....what I do is index a photo from 256 colours to between 4 - 8. Grayscale is straightforward but wanted to have browns with white and blacks so if possible create my palettes accordingly. Sounds complicated I know lol

Odinbc · **Posted:** Mon Feb 01, 2016 7:01 pm **(#13)**

Give the Import Palette dialog a go.

jazzon · **Posted:** Mon Feb 01, 2016 7:23 pm **(#14)**

Wow. I am shamed. So many years on Gimp and I didn't even know that existed ....

Deblk · **Joined:** Dec 22, 2011 **Posts:** 399

Odinbc wrote:

Give the Import Palette dialog a go.

Thanks...will try that

Jazzon we live and learn everyday

jazzon · **Posted:** Wed Feb 03, 2016 10:43 am **(#16)**

Grits · **Joined:** Feb 23, 2011 **Posts:** 70

http://docs.gimp.org/en/gimp-indexed-pa ... ialog.html

I think this is what you are looking for.

trandoductin · **Posted:** Thu Mar 03, 2016 3:31 pm **(#18)**

Do you mean something like this?
take a source image like this color or black and white.

and a palette image (here 8 colors that has black white and some yellowish browns).

and get a result like this?

Deblk · **Joined:** Dec 22, 2011 **Posts:** 399

trandoductin wrote:

Do you mean something like this?
take a source image like this color or black and white.
[ Image ]
and a palette image (here 8 colors that has black white and some yellowish browns).
[ Image ]
and get a result like this?
[ Image ]

Yes, exactly what I am looking for

trandoductin · **Posted:** Fri Mar 04, 2016 1:32 pm **(#20)**

Deblk wrote:

trandoductin wrote:

Do you mean something like this?
take a source image like this color or black and white.
[ Image ]
and a palette image (here 8 colors that has black white and some yellowish browns).
[ Image ]
and get a result like this?
[ Image ]

Yes, exactly what I am looking for

Then it's really simple.
First draw your palette colors, or open image with your desired palette.
Count number of colors (call this N).
The Image->Mode->Indexed then click on Generate optimum palette and enter N as maximum number of colors.
Then just copy paste in your desired image (or Open it as layer)...
because the Mode is indexed, it'll force your pasted image (or opened as layer) to match the indexed mode.