Re: [Gimp-user] Help with color of several shades
You can also dup the base layer, and decompose to B&W using channel mixer. I would put the green contribution to 1.00 and remove red and blue until you get a good mask that isolates the "mortar" (you can use "preserve luminosity"). That is, the 'mortar' is all white, while most of the bricks are all black. Then duplicate the base layer again, add a layer mask, and copy/paste the B&W layer as the mask. This isolates the mortar. You can use "colorize" to adjust the hue/sat/lightness of the mortar then. It sounds complicated. It's not, but you'll need to be comfortable with these operations to use it. So I did it already: http://filebin.net/6zog3m5uqo Just use "Colors -> Colorize" on the top layer to get the colors you want. On Sun, Apr 24, 2016 at 11:01 AM Akkana Peck wrote: > SArtino writes: > > I suggested painting the wood edges to a bright > > green because we make no blend that contains green, sowe can use a > single photo > > of one brick wall, and change the color of the green mortar joint to > whatever. > > 1 photo of each wall blend, edit 20 different mortar colors. Sounds like > a > > simple idea right? > > * > http://www.gimpusers.com/system/attachments/242/original/IMG_20160413_133407.jpg > > This was a week ago so it may be moot by now, but since I didn't see > any other replies: one thing you can try is different settings of > Select by: in the Tool options for Select by Color. You could try > either Hue (since the mortar is greener than everything else), > Saturation (since the brick color isn't saturated but the mortar is) > or Green. Don't forget that Select by Color lets you drag to adjust > how much is selected: up/left to select less, down/right to select > more. It looks to me like with that image, Green isn't working at > all but Hue and Saturation both work a lot better than the default > of Composite. > > You'll still need to clean up your selection after making it, > either by copying it to a layer mask or by editing it in the > quickmask. Use Levels to threshold it (Threshold handles only black > and white so you get hard edges; adjusting the middle slider in > Levels usually gives a better result, with gradual edges). You > might also want to use Dilate, Erode and Blur, and maybe paint > over a few areas that didn't work out quite right. > > Good luck! > > ...Akkana > ___ > gimp-user-list mailing list > List address:gimp-user-list@gnome.org > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list > List archives: https://mail.gnome.org/archives/gimp-user-list > -- Pat David https://pixls.us http://blog.patdavid.net ___ gimp-user-list mailing list List address:gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
Re: [Gimp-user] Help with color of several shades
SArtino writes: > I suggested painting the wood edges to a bright > green because we make no blend that contains green, sowe can use a single > photo > of one brick wall, and change the color of the green mortar joint to > whatever. > 1 photo of each wall blend, edit 20 different mortar colors. Sounds like a > simple idea right? > * > http://www.gimpusers.com/system/attachments/242/original/IMG_20160413_133407.jpg This was a week ago so it may be moot by now, but since I didn't see any other replies: one thing you can try is different settings of Select by: in the Tool options for Select by Color. You could try either Hue (since the mortar is greener than everything else), Saturation (since the brick color isn't saturated but the mortar is) or Green. Don't forget that Select by Color lets you drag to adjust how much is selected: up/left to select less, down/right to select more. It looks to me like with that image, Green isn't working at all but Hue and Saturation both work a lot better than the default of Composite. You'll still need to clean up your selection after making it, either by copying it to a layer mask or by editing it in the quickmask. Use Levels to threshold it (Threshold handles only black and white so you get hard edges; adjusting the middle slider in Levels usually gives a better result, with gradual edges). You might also want to use Dilate, Erode and Blur, and maybe paint over a few areas that didn't work out quite right. Good luck! ...Akkana ___ gimp-user-list mailing list List address:gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
[Gimp-user] Help with color of several shades
Hi everyone. I'm not new to Gimp, but I'm also not an advanced user of it. Recently we've started a portfolio of our product at work (we make block/bricks) and needed a way to display our product. I suggested a small wall platform and we could stack the bricks on the platform making a small wall and take a picture with wood in between as the mortar joint. So, since these are designer bricks, the mortar joints between range in shades from almost black to white, and colors from dark brown to red to a buff (almost yellow). So, since we make about 20 different color brick blends, and there is probably an equal amount of mortar colors the contractors use, I suggested painting the wood edges to a bright green because we make no blend that contains green, sowe can use a single photo of one brick wall, and change the color of the green mortar joint to whatever. 1 photo of each wall blend, edit 20 different mortar colors. Sounds like a simple idea right? It there anyway to change the shade of one color spectrum to another without having to zoom in and painstakingly draw over it? Meaning all instances of said green (shadowed and gradients) to another color without effecting the rest of the image in gimp? Attachments: * http://www.gimpusers.com/system/attachments/242/original/IMG_20160413_133407.jpg -- SArtino (via www.gimpusers.com/forums) ___ gimp-user-list mailing list List address:gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
