GIMP :: Using Select Color Tool On Pixels With Transparency
Mar 28, 2012
I was using Paint.net but I've found it too limited. The GIMP has much more power and I can do a lot more with it, but I've found a few things I can't figure out how to do.
For example, when I use the Eyedropper tool () to choose a color, GIMP doesn't seem to include any transparency in the selection:
The Colorpicker just chooses the color at 100% opacity. Is there any way to change this so that my new foreground color includes the transparency level?
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Jun 4, 2011
Is there a way to make the color select tool not only select a specific color but related shades as well. I have a graphic that is mainly shades of gray but with black outlines and divisions as well as other colors mixed in. I want to shift all the shades of gray to shades of dark yellow without have to select each shade individually.
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Oct 13, 2013
I seem to be getting only partial transparency when using Foreground Select Tool (as compared to Full Transparency when using Rectangular Select Tool)
I am pretty sure this was not the case the other day. I have tried resetting all Tool Options and looking through preferences for anything I may have changed but can't spot anything.
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Oct 15, 2012
2 days on GIMP. I need to adjust the clone tool so it's 1080 pixels vertical and about 20 pixels wide. I googled and searched, but I can't seem to find the right phrasing.
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Jul 13, 2013
I'm looking at tutorials on how to add strokes to text (I downloaded it today) and they say to use the color select tool. In their demonstration, when they select text, it has the normal dotted lines around it. For me, when I click it just has a thick border around it and it tells me to move my mouse to change the threshold. It won't select the text, just change the threshold when moving my mouse from left to right.
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Oct 20, 2013
How can I reduce the size of the Pencil tool to as little as 1 or 2 pixels? I want to draw fairly fine shadows, and have figured out that creating shadows requires smudging or blurring gradients of black-to-grey, but the default options in the Brushes toolbox are far, far too large.
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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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Sep 13, 2012
I had a .JPEG of a leaf photographed against a white background. When I went to turn that white background into a transparent alpha channel, it seemed to work okay....except for the fact that when I then went to select the new alpha channel via the Fuzzy Select Tool, it wasn't selecting all these newly transparent pixels.
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Jun 30, 2012
How can I control the color of transparent pixels?
I save my image in RGBA (Windows bitmap). The RGB value of the completely transparent areas always turn completely black, and I want to control the color myself.
It may seem pointless, as the color is transparent, but I am using the image elsewhere (for creating mipmaps) where there is interpolation between pixels. Interpolating between 0 and 1 in opacity gives 50%, but the RGB part of the interpolation will mix with black, giving a dark halo.
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May 15, 2013
Is it possible to select an area then within that area select by color?
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Apr 7, 2012
How can I find all pixels in an image with an exact, specific color? So far, I've only managed to find the pixels matching a pixel I click on; but I wish to find pixels matching a specific color value!
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Aug 2, 2011
I'm trying to change the color of this car to a gloss black using the Color Replacement Tool but how to change the color for the tool.
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Mar 31, 2012
step 1) I remove the background of my image with the color to alpha method, isolating the part of the image i want.
step 2) I then use color select tool to select all the transparent area that was left behind from step 1.
step 3) I create a new layer.
step 4) Then I use the bucket fill tool to fill in the area on the 2nd layer that was selected in step 2.
This is where I run into trouble. On some pixels where the color filling meets dotted line area (made by color select tool) the color comes out translucent. I don't want this to happen. I want it to be solid ff00ff (color hex) without the random reductions in opacity.
I'm working with sprites and the emulator i use has ff00ff as transparent. I'm getting random pink color coming out of the edges of my sprites. These little specks of pink should not be appearing in game because it is supposed to be read as transparent. i suspect that these specks coming out are related to these translucent hiccups made in gimp.
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Aug 15, 2013
Is there any way to apply transparency to a color when using the recolor artwork box? I am dealing with a lot of puppet warp and gradients so it would be nice if I could use the recolor artwork box, instead of looking for all the colors manually.
As you can see from the screenshot, there is a lot of colors to go through.
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Feb 12, 2013
I opened a transparent PNG and exported the PNG to another file and unchecked 'save color values from transparent pixels' but about 20% of the color values in transparent pixels STILL remain in the picture when viewed in other programs that show those pixels!!! Gimp is NOT removing ALL color values in transparent pixels!
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Jul 14, 2013
I have 60-something 24 bit PNG images that I've edited in Gimp, many of them include transparency. I want to batch convert them to 256 colors while keeping the transparency. Can this be done? I did try it in another editor and any attempt to keep the alpha channel transparency resulted in totally washed out colors and transparency where none should exist. Conversely, if I skipped the transparency the color depth reduction went well.
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Jun 21, 2011
I am using the fuzzy select tool to select a contiguous region of white background (to make it transparent). The flower has some white areas and it selects a small area of the flower too.
I have another whitish flower and I have no problem with fuzzy selecting the white background.....except when I add contrast to the image (and the white areas are also selected). I haven't found a way to add contrast after fuzzy selecting/adding an alpha channel. Is there a way to do this?
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Aug 8, 2013
I am trying to align some stuff and having a heckuva time. Its basically this..
word * wordyword * wordhere * wordwordword
the * are little blue dots centered horiz and vert.Everybody is on their own layer.I am trying to get everyone equidistant, the words aligned bottom and the dots aligne center vertical.
I select the align tool, then click on word. Next holding shift I drag everything else and it is all selected. K. I have trimmed all the layers so all that is there are the things I want to align.
I have tried clicking everything in the options box and the closest I get is with distribute horizontal centers with offset but that leaves me with odd spacing.. if I simply select the text it is better, but the spacing is still not right..
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Jul 23, 2012
When I use my mouse to use select tools (like the lasso, the outline lines that appear (that show the selected area) show up fine. When I use my tablet, usually, they are not visible.
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Feb 9, 2012
I am deciding to switch over to gimp from pixelmator because of the extra features. However, there is one thing that is making me concerned is some limitations in the filters.
How do I create a checkerboard pattern (using the filter) which has a green color for its primary color and transparency for its secondary color? In pixelmator this is easily done because there are extra color pickers in that filter supports transparency, so no problem. However, this isn't the case in gimp.
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May 18, 2012
Just downloaded/purchased DesignerPro X and do not understand how to use this tool. I followed the instructions in the help file (as well as an old man can!) and cannot get it to work. For instance, I cannot get the color tolerance/fade controls to move off of 20/25% respectively. If you specify which photo you are using in the Design gallery, I will follow along.
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Aug 8, 2012
I am trying to change the hue of the sky in a photo. Following the instructions in the Help file, I first used the Color Select/Erase Tool to click on the sky in several areas to erase it. The instructions then say "Now select the Make Mask button on the Infobar." My problem is that I don't see a Make Mask button. I see a Make soft mask button and an Edit Input Mask button. Since the instructions go on to talk about these other two buttons, it seems clear that they are not the Make Mask button. So where is that button?
I might add that I am also looking for a way to make just one part of a graphic transparent. Would this Color Select/Erase Tool be appropriate for doing that?
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Jul 2, 2013
I was trying to make a color range selection to use as an adjustment mask. Each time I make the selection the dialog box freezes, I can not exit the dialog, or cancel the save options are available but even after saving can not exit dialog box. Also the menu "Select" "Save Selection" option does not work.
I end up having to close the program using Windows Task Manager. I am running Windows 7, CS6 13.01 I have tried this in both the 64 and 32 bit versions of CS6. Oddly if while in the Color Range selection Dialog intermittently if you only make one sample with the dropper tool you can exit the dialog with the selection in tact, but not always.
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Feb 26, 2014
The only color the eye dropper tool selects is black. (CS6)
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Aug 16, 2012
When I use the bucket tool to fill in an area, how can I select a color? It just uses black by default and I can't find a way to change this.
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Jan 21, 2014
i tried restarting gimp but it did not fix my problem. All of a sudden, out of nowhere, my fuzzy select tool selects WAY too much even at a threshold of 1. at 2 it just selects the whole picture.Re-installing did not fix.
i am creating black/white based icons. So it is a 48x48 image. i am mainly trying to fuzzy select black, white, and transparent selections. As you can guess, it has become impossible now and i don't know what i did.
EDIT: Okay so it actually isn't selecting "too much" per-say. i willt ry and explain the best i can here:
Black and white image with the exception of some shades inbetween.Select fuzzy select and put threshhold at 1. Click. Selects all the white (i actually think it misses some). i hit SHIFT and click on a pixel that is slightly not white. VERY SLIGHTLY. In fact, it may actually be white. It fuzzy selects EVERYTHING.
Another example on an image that is Black and Transparent (with shades inbetween) Slect black on threshold 1. It selects All the black AND all the shades inbetween. Eveything except flat out transparent. i hit CTRL and select a shad einbetween and it deselects everything.
EDIT 2: Doesnt matter the threshold apparently. It will do this on any.
EDIT 3: The solution, after all, was so save these problematic images as JPG and then open them as the JPG.
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Nov 27, 2012
I'm brand new to GIMP, I just downloaded it to get into some simple pixel art.
I was going fine, but I've run into a problem. I'm trying to select a portion of my image using the rectangle tool, and then move it to a different location using the move tool. However, when clicking and dragging the move tool it shifts the entire image, not just the portion I have selected. I read in the FAQ that you need to press "Enter" to finalise the selection before you move it, but even doing that doesn't work.
This was working fine for me earlier, I'm not sure what I've done to break it. I've tried resetting my tool preferences back to defaults but that has not worked.
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May 25, 2012
I am trying to use the rectangle tool to select a rather specific area. I am trying to make a 50x50 square in the bottom left corner, but I don't know how I would accomplish this.
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Jul 13, 2011
I'm just getting back into image editing after a year of hiatus, and so I downloaded the newest version of gimp so I could get started. My select tool worked fine for a few minutes, then stopped letting me move pieces of my layer around. I was thinking maybe I accidentally changed a setting, so I fiddled with that, but no luck.
Select will still let me highlight and edit specific pieces of the layer, just not move them around. When I drag and drop, the piece of my layer appears as if I've selected nothing, and I'm only working on a single layer at the moment.
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Oct 20, 2013
I've been wondering how do you get the rectangle select tool to move the image, like in mspaint whenever I use it, it just moves the rectangle square and not the selected part of the image.
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Apr 19, 2012
When I copy a selection from one image to another, I can't select the feather tool to blend it in the new image (it's greyed out). I have to first anchor the layer, then use the paths tool to re-select the pasted portion again, then feather. Is there another way?
Update: Looks like I can feather before copying/pasting the selection.
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