I am using the latest version of GIMP on my windows 7 pc but color to alpha doesn't work. At my pc at work it works fine but i use windows xp there and i have ghostscript and python installed.
Or is it something completely different?
I want to use the Threshold Alpha command on a Layer of Solid Noise, but nothing happens. If I set the threshold to 255 everything goes transparent, anything below that the clouds are supremely unimpressed. It's an RGB image, has an alpha channel, no Alpha channel lock, the Threshold tool works fine. I also tried creating another test picture with several gradient in greys and colors, and they are equally unaffected by Threshold Alpha.
I'm using GIMP 2.6.11 on WinXP SP3.
I have a dark gray triangle alongside a pure white triangle in a square GIF image. I want to convert the white triangle to alpha and leave the dark gray triangle completely opaque. When I use Color --> Color to Alpha, however, I see the checkerboard pattern extend over the gray in addition to the white.
1. Does this mean that the gray is being made translucent?
2. If so, how do I set only one the white to alpha (at 0% opacity) and leave the gray at 100% opacity?
I took a photo of the sunrise. The sun was very "red" from forest fire smoke. But when I looked at the photo later the sun had lost its "red" (due to the brightness of the sun). restore the sun color as I saw it?
Below is the photo I want changed and the next photo (not mine) is approx. the color I saw the sun as (perhaps a little redder). I want "my" sun filled with that color.
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 .
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.
View 6 Replies View RelatedI don't understand how you can know which colors to use when applying "Alpha to Color".
Here are a few images I have and what I've done so far:
Here are my original images
I have been doing light box photography, but I want to get that pure white background as product images usually have.
My background is a light grey.. Using the wand tool, I was able to get close - but far from close enough.
[URL].....
What's the right method, to turn every thing around the dime, white?
Here it is before the wand,
[URL]......
I have a plain rectangle with overall c09300c0 RGBA levels.I want to change the alpha channel value from c0 (193) to some other value, for the whole image at once. Or some other color channel.
How can I change the absolute value of a channel ? The color menu has only relative adjustments.
I have a texture for an object that will be rendered. The RGB for the texture contains diffuse color, and the Alpha channel contains a special parameter for the shader. The value for the parameter is 0 for 99% of the pixels.
In my XCF I have diffuse color on one layer, and the special parameter on another layer (as a greyscale).
So I copy the diffuse layer and call the copy Final. Then I create a layer mask on the parameter layer using the greyscale value. I copy the layer mask from the param layer to the Final layer, and then I apply the layer mask to Final, which should simply write the mask to alpha.
I look at the channels window to be sure, and alpha is written correctly, BUT everywhere that alpha is black THE OTHER THREE CHANNELS ARE ALSO BLACK! I can't fix this! What do I do? I even tried exporting to see if it carries through to the output image, and it does!
What's more, I tried to trick it by putting a very low value (like 1/2) in the pixels that are supposed to be 0 in alpha, and then I get an even weirder effect, wherein most of the color is kept, but some pixels color information is trashed anyway. Is there an export mode which will tell GIMP not to trash the color information on fully transparent pixels? Or better yet, can I tell it that alpha is not transparency?
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.
I'm on MacOS 10.9 (Mavericks). Using GIMP 2.8.8 (lisanet edition).
GIMP has been installed for many years on my computers, but first since it runs natively (without x11 or xQuartz) have I finally and entirely switched to GIMP for my raster graphic work.
I really like GIMP and I'm working on expanding my knowledge and respect this excellent programme very much. There are of course a couple of oddities when you are used to Photoshop (until 3 months ago). I'm getting there. Though one issue sticks out:
The use of the eyedropper tool for example in the Color to Alpha Dialogue. First of all I'm aware about the difference between the Color Picker (set colour from image pixels) in the toolbox and the eyedropper. I'm writing here about the latter. It simply doesn't work at all. When I open Color to Alpha... and then click on the color field (by default it's white #ffffff) the Color to Alpha Color Picker opens. When I select here the Eyedropper tool (Click the eyedropper, then select a color anywhere on your screen to select that color.) the following scenario happens: the cursor doesn't indicate a particular function (stays as standard pointer) - when clicking anywhere on my screen both dialogues, Color to Alpha and Color to Alpha Color Picker disappear (respectively they slip behind the main GIMP interface). I can't select any color! And when I manage to get the two dialogue windows back into focus, I have to wait a certain amount of time before any pressing of OK or Cancel shows any response.
Sometimes a random color gets selected but this is beyond my influence.
I guess it's a weak spot of the new native GIMP without any X11 wrapping. The windows managements has several weaknesses (i.e. GIMP/Hide). I also thought that it might be caused by the Single-Window Mode. But even without that the problem remains. All in all it's a very important function and without it the workflow involved gets very tiresome.
Today I downloaded last version - Gimp 2.8 and when I wandted to use eyedropper tool in color dialog, I found out that it doesn´t work. So I uninstaled it and downloaded it again. But it doesn´t work too.I´m on Windows XP SP3.
View 6 Replies View RelatedThere seems to be tons of threads on how to make a transparent image, but I haven't been able to fine one to do one specific thing.
How do I set the alpha channel to be black? I want to have a black background on a png file, but I need the black to be transparent to things behind it on a webpage.
Just bought the new CS6, but already got a problem:
Color range in Photoshop doesn't work, every time I try to use it, it says, that there is a programming error.
I have the new Lion OSX. I have Lightroom 2.7. I am having issues with the colour picker. It will not leave the colour palette and let me select from the image. I have tried holding down my mouse key, but it won't leave the palette. This is in the adjustment brush..
View 2 Replies View RelatedI am making a poster but not very experienced with GIMP.I want it to look like this:URL...The perspective tool doesn't work because it makes it unreadable as the text I want to use is quite long - 3 words long.
View 2 Replies View RelatedI have seen this in a lot of photos especially kids photos. The picture on the right show more of what I am talking about. See the vibrant greens and blues and oranges. Obviously those are not the originally colors of that background. I am trying to figure out how this is done.
View 1 Replies View RelatedI am trying to use Color Balance and the window doesn't work. The only part that shows is the "Enhance Color Balance" box, the words "purple" and "green" just above, and the preview arrow (which does nothing) and "preview on image". Preview on image is checked and it does show changes but I am unable to uncheck it. Nothing else shows. Nothing I have tried has worked, including restarting the computer.
View 6 Replies View RelatedI have a problem with CS3. Since a few weeks I can't use properly "Colour Range" feature.
Especially for bright colour the Colour Range doesn't select what I want to select. For example I want to select a bright cloud and can't select it with Colour Range. Of course I checked if there is any information or I have a burn area. I use several different setting but I still have the problem.
I used 8/16 bit, Adobe RGB/sRGB
At Colour Range I use:
- Sampled colours
- Selection
- Fuzziness: how much I need it
- Selection preview: None
i have a black written logo with some letters in blue and i want to change the color into green.
the problem is that at the edge of each letter the color is slightly different (light blue) to make it look smoother.
if i now take the color bucket and fill the letter up, the color changes but it gets filled with the same color until the edges and it doesn't look smooth again.
changing the antialias effekt doesn't effect anything -
to
i want to change the blue by green but with the lighter parts of the edges. simple and easy like refilling the colors.
is this possible with Paint.NET or should i consider to buy photoshop because of this lack of functionality?
According to URL....I should be able to sample a color from the desktop. This doesn't work when I try to capture a color from a web page displayed in IE 10 (desktop mode).
It does work with Chrome, and I suspect other browsers as well (haven't the time to try them all).
As soon as you set a color for a layer listed in the layer window, you can't undo that. The "no color" selection in the context menu does nothing. Looks like a bug.
And btw. on page [URL] ...... the link "User Groups" points to [URL] .... which isn't delivering anything ("No data received").
I dobbleclick on fill-color icon in lower right side of the screen to change the fill-color. But no dialog-box appear. But if I try to click anywhere in Corel after this I just get a beep. Looks like there is a dialog-box outside screen or something.
View 4 Replies View RelatedI wonder if the bevel tool works with pantone color?
I just couldn't get the result.
I used to save images in 1-bit PCX format, as required by several label(thermal transfer) printers. I can't find any way to do that anymore.
Export to PCX does not give any options, and exports 24bit color.
Even after changing the image format to indexed, and selecting 1-bit B/W,export to PCX is still
8-bit colour, 300 x 300 dpi, RLE compressed
Any way to accomplish
1-bit colour, 72 x 72 dpi, RLE compressed
Note that another accepted format is monochrome BMP, but this does notseem to work either in GIMP. The only options offered are RGB.
This morning I was trying to get the color dynamics to work with the paint brushes. It seems that in 2.8 the "Color to Gradient" dynamics tool was taken out. (However, in the dynamics there are many cool options to choose from, just not gradient.) So getting frustrated, I searched the web after someone mentioned the "Color to Gradient" dynamics and I found this tutorial on creating a "Color to Gradient" dynamics from the dynamics editor.
[URL]........
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.
View 1 Replies View RelatedCan I scan in hand drawn work and color it in GIMP?
View 3 Replies View RelatedWhen I use the "Save As..." command to save a picture with transparency as a Windows bitmap file (.BMP), the transparency information gets lost. I selected alpha-channels and chose 32-bit in the BMP options dialog.
In CS3 this works fine.
how I can get it to work in CS4? The target program can only read BMP-files, so my workflow depends on it.
When I save a render as PNG and then open it in Photoshop, it doesn't have the alpha channel, just R,G & B channels. The PNG Configuration Setup when saving the image has of course Alpha channel box checked, but is not available when I open the file in Photoshop.
Note: I was able to do this in 2008 version.
