GIMP :: Isolate Background Using Color?
Mar 23, 2012
Earlier this week I mentioned on Google+ that I discovered something about gimp that was pretty huge, something that would change how I edit photos forever.
Since then, I've been determined to figre out how to boil this small bit of information, and show you just how much this can work for layer masking and isolating backgrounds, especially in the studio scene and landscape photography. I finally decided to simply do what I do best - record a gimp video tutorial using the method that I discovered, and share it with everyone.
Click here for the gimp video tutorial.
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Sep 30, 2012
I have about 125 RAW files of random objects that were shot against an white background in a homemade light box.
My goal is simple, to isolate the objects against a completely white background whilst still maintaining the shadow of the object (if possible). I have been using Lightroom 4 and a lot of brushes to complete such a task, but I know there is a simpler way to accomplish this with Photoshop. I am using Photoshop CS6.
Here are what I think are the three most tricky pictures:
DSC_0733.zipDSC_0749.zipDSC_0778.zi
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Aug 13, 2012
I don't find a way to isolate and undo isolate an occurrence in Assembly, looking for the right code in VB.
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May 11, 2011
I am using Photo Paint 9 to edit photos I took of some watercolors I did. Many of the photos are of a single animal on a white background (similar to the California state flag). When I printed many of these out they had a greenish tint (not a printer problem) so I went to Image--Adjust--Color Balance.... I adjusted the cursor on the Magenta/Green bar to -15 (towards Magenta) and hit ok. The problem is, now when I print, the image is ok but the background which I want to be pure white now has a pinkish (magenta?) tint to it.
Is there any way to isolate the image and get the background pure white again?
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Nov 13, 2012
I'm attempting to tilt this image for use in a game im writing. I've been using Map Object and rotation (Y) but this then causes pixel color changes on the boundary with the background color. How would I tilt this picture without getting the problem?
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May 22, 2013
How I choose a color for any new objects I want to create. I've opened the toolbox with ctrl-b, which appears on the left side of the window. If I want to , for example, draw a red rectangle, I use the rectangular selection tool, then the bucket fill, and I don't see how to change the foreground color to red.
I've read elsewhere in the forum that there should be two rectangles somewhere on the screen that show foreground and background color, but I don't see them anywhere.
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Jul 4, 2013
When I color a the background of a photo to alpha it works just fine, I save it and export.
But when I try to open that same photo anywhere else the background is white .
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Nov 10, 2013
The one that lets me choose, for instance, white and black, not the eyedropper.
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Oct 25, 2012
How to install a certain background color in the program GIMP 2.6?I see by default only two colors - black and white.
The second question:*How to set mode the "overlap"?
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Oct 25, 2012
I have an image with an transparent background. I want to change all pixels that are not the background to one color. How do I do this? I can't select the pixels, they as arbitrariliy distibuted. I've played with threshold, but that's not working either. I tried Image-->Mode -> Indexed and then Use black and white palette, but that doesn't work either. I thought i would convert all non-transparent values to black, but instead its picking some threshold and making some black and others transparent. Example file attached.
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Nov 19, 2012
I have been working on colorization, by putting a transparent B&W image over the color background, all is good apart from when I do people and just want to show their eyes in color. Allot of the times eye color comes out wrong, for instance, when I did my daughter her eyes are blue but color came out brown eyes.
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Jul 10, 2011
I am pasting a color image onto a BW background. When I do this the image converts to BW. How do I prevent this from happening? I want to keep the background BW and the pasted images color.
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Jul 23, 2013
A while ago, I wanted to add a border in the background color around a layer. So, I increase Layer Boundary Size using the corresponding tool. So far so good. I even wrote into a script, combined with adding drop shadow, see [URL].......
Then, I bought a new computer. I knew it. Never update or upgrade.
Now, when I increase the layer boundary size, it does increase the size of the layer, but the "border" is now transparent. I know, I know, I can fill it up using the bucket fill tool, but first of all this is annoying, and second of all, I am really wondering: what happened? Why did it work before, and doesn't it work now anymore? I am baffled. I see three possibilities:
- The GIMP installation on my new computer has some global setting differently which I am missing
- GIMP was updated and this has changed
- this is a bug, or at least a quirk, having something to do with old computer running on Win7 and new computer running on Win8
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May 25, 2013
I have attached two images of a young girl. One image (the original) is the one with the busy background. The second image is the one that I have cut out. Now with the pattern I have inserted behind her, the image seems quite acceptable, but if it as a plain white background, there is still some areas around the hair strands that contain the bluish background. Also to get to the stage of my image, I had to delete some of the whispy hair strands to make it look acceptable.
My question is, do you think it is possible to cut this out any better. This was done using the Color mapping method, but I have tried a number of other methods, but cannot seem to keep the hair strands visible and still end up with some color contamination around them. Do you think you could try this image and see if it could be done better.
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Mar 28, 2013
I created a gradient using the gradient tool. If you look at the image I supplied, you can see a clear line between the white background and the -what is supposed to be- white bg color of the gradient. Why is this not smoother?
Using gimp 2.8 for mac.
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Sep 16, 2011
When adding a foreground image to a "flaming" blue background, I find that the image I add takes on the blue colors of the background, rather than keeping its original colors.
The linework and highlights (indeed, most of the detail) remain - they just all turn blue, heh. Like it's trying to camouflage itself. How do I keep the foreground image from "masking" itself to the colors of the background?
Both background and foreground image layers are in .xcf format. Could this be the problem? Do I need to change one or both to something like .jpg or .gif?
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Nov 8, 2013
I am new to the gimp software and am struggling blending a photo into a solid color background.I cannot seem to get rid of the hard end of the photo. I have tried applying a mask then using the blending tool, but still cannot remove the line.
Blurring image, i'm just messing around to try... [URL]....
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Sep 21, 2013
First time using GIMP. Following the directions here: [URL] ......
Using, "Color to Alpha," I tried to select the background of my .jpg image. The background is white, the picture (logo) portion is silver. Because of the closeness in color, when I select white, the software selects the entire image to become alpha (transparent).
When I select the color of the picture, silver, I am able to select just the logo portion. How can I take the logo portion, which is now converted to transparent, and give it a black or transparent background, and then return the logo back to its former color silver. The logo is perfect, it is just that I recently switched my site from a white header to a black header and the image has a white background, so that does not look good.
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Jun 19, 2013
I have 2 layers and I want to mask one through the other. I've attached a png showing what I want. I tried to attach an .xcf file, but it won't do it, which seems strange for a gimp forum. Anyway, one layer is the text (black outline) and one layer is a colorful background. In the xcf, the background layer is entirely filled with the colorful stuff, but I want it to only show through the interior of the letters (as shown in the png).
Attached File(s) at-final.png (9.55K)
Number of downloads: 2
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Jun 15, 2013
I am new to GIMP. I have a pdf with a neat picture and want to eliminate some text, essentially painting over it in the same color of the rest of the red background. Then I want to turn it into a powerpoint template with the first page the full picture but my own text and subsequent pages just a sliver of the picture at the side, with the normal ppt format and capabilities. I have attached the image.
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Mar 9, 2012
I have a scanned image which is black text on white paper. The paper comes out darker in some section because of scan. Is there a simple way I can make the off-white background white?
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Jun 5, 2013
I did put a real photo in the background of my website to fit entire page. So the text of my webpage is black, and sometimes other colors. So what happen is that some times the text is hard to read when it come on top of dark places of the photo (for example hear of people). So i want to adapt the photo to make it more unicolor, more whiten (increase whiteness) so the black text will appear even better.
What tools and filters in gimp that give me this ability to do that ?
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Feb 4, 2013
Okay so I'm trying to take the white background off of a picture using the select a color on white, but it takes out a lot or the fur and eyes(it's a picture of a cartoon cat) How can I remove the areas of can from the selection without removing the pieces of cat too.
It's creative commons, so I guess I can post screen shots...
The cat is from [URL]...
A general idea of the selected area
What happens when I take out the selected area
So how can I take the pieces of the cat out of the selected area so when I try to delete the background I don't get an invisible cat?
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Sep 16, 2011
I was asked to cut out the background from a logo to make it transparent so the logo would look nice on a variety of backgrounds. I've been given a good quality jpeg file.
What I did was I selected (by colour) the background (white), inverted the selection, copied it and pasted as a new image.
It's all fine (the logo itself doesn't have any other elements) but there's still some whiteish/greyish outline around certain elements of the logo.
If I were to do it manually, it'd probably take ages. What would be the best way to accomplish it?
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Jun 17, 2013
Is there a way to change the color of the Vignette to match the page background color. It appears to that only Black is available at this time.
Is there a transparent vignette available anywhere .
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May 19, 2012
You know how when you're painting, you can hold ALT and it will pick a colour from the canvas? Well, for some reason, mine still picks up the colour but it sets it to the background colour instead of the foreground colour.
And when I actually select the colour picker tool, it will only select the background colour but when I hold Alt, it selects the foreground colour. Basically it's flipped where it's supposed to select.
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Oct 17, 2013
When I have any kind of layer, and I want to change the foreign or background color (with the color picker) I just cant. When I click on the foreign or background color it automatically selects the eyedropper tool, and I don't want this to happen.
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Mar 4, 2012
How do I outline an image so I can change the background color without changing the image color ?
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Feb 3, 2013
In photoshop elements 11, in a photo collage, in graphic tab, how do i change the background to a color in the color wheel?
Same thing for the graphics, i only have 6 choices, i want to add a graphic stored on my pc or other ones in the program.
In photoshop elements 11, in a photo book, page 2 and 3 are stored as one image, and have to have the same background color, and layout, how do i change that?
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May 9, 2013
Every time I pick a color either via eye dropper or the swatches tab, it sets it to my background color. It use to set it to my foreground color. How do I change this?
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May 19, 2006
I created an image in PS and then went to Dreamweaver to code. I wanted a certain cell to be the same color as the image I created in PS so I set the cell to the same hex value as the one in PS.
When viewed in a browser though, the color is different.
Why?
What do I need to do to make them view the same on the web by using the hex value?
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