I have a few images that I have saved from online that have an alpha layer in them. When I open them in GIMP, the checkerboard pattern makes it far too difficult to edit the image. When I try any of the obvious options for removing the alpha layer, the result looks awful.
How do I remove an alpha layer without changing the way that an image looks when it's viewed in an image viewer (or GIMP)?
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.
My task is to do a batch processing over an folder with images. I want to add an alpha layer to every image (png). The alpha layer is from a static second image (bmp).
I can accomplish the task in the GIMP front end manually, but the exactly same steps in my script aren't working.
Here's the script:
(define (script-fu-batch-alpha-add globalpha globpics) (let* ((filelist (cadr (file-glob globpics 1))) (filealpha (car(cadr (file-glob globalpha 1)))) (imgalpha (car (gimp-file-load RUN-NONINTERACTIVE
filealpha filealpha))) (drawablealpha (car (gimp-image-get-active-layer imgalpha)))
[code].......
For quite some time I've been trying to find the best way to remove a white background from images. I've checked out the sticky thread on this forum and as my image isn't of great quality and because it features quite a lot of white that won't apply.
Recently I found this tutorial which is supposed to work great (as seen in the comments). However, I think that because of a GIMP update that won't apply anymore somehow. I was hoping you guys might know what was causing it.
Everything works well until I get to step 7, where I have to select to Alpha. There it selects just the outlines, but my selection includes inner parts of the image, not just the background. And then after I invert and delete, the white that remains still has transparent parts that show up on the upper layer. So, am I doing something wrong with the Alpha to Selection, is that tutorial updated or is there a better way to remove the background from ie. a logo with just one background colour which isn't of great quality.
So I have this small image consisting of a sine:
and I would like to get a gradient border on it (something like two pixels would be perfect) from the green sine to black. (Partial transparancy would be nicer but since .gif doesn't support that...and yes I do need it to be a .gif XD)
Problem is...that I can't get any of the filter options to work, they are all disabled. After some tests I noticed that this is because there's an alpha layer that for some reason disables the filters.
So...how to get a gradient (green to black) border on the sine?
For years I've been using various image editors, often in combination. That is, I do simple stuff as copy / paste and repositioning of elements in one editor and subsequently open the image in a more advanced editor for proper paintwork. Currently I'm using the Gimp for the latter. Color layers work brilliantly. However, I have big problems with my alpha channel--I've found no way to edit it within Gimp and I've found no way to import a revised version that I've edited in another image editor. There must be solutions to both challenges.
The editing I require is piece-of-cake in basic image editors--I simply want to move a transparent region a bit to the left. That should be a simple rectangle selection and then shoving it (mouse or arrow keys) to where I want it. Alternatively I could import my edited alpha channel image as I'm used to doing in other editors. Well, the Gimp will accept the image as a layer all right but I haven't succeeded in making the Gimp import my grayscale image as an alpha channel. I get a grayscale non-transparent layer instead.
So, I've got a perfectly good alpha channel that needs a minor tweak. It loads as intended in Gimp. How to perform basic editing of this alpha channel layer or tell me how to import a revised version and tell Gimp that this image should be interpreted as an alpha channel?
Is it possible to automate the following: I have a directory of about 50 jpg files. With each file I would like to:
- make the image square, by increasing the canvas size of the least dimension. ie if the width is less than the height, increase the width to the value of the height, or conversely if the height is less than the width
- add a transparency layer
- save to xcf
Basically just want to make the middle separating line in the following image:
Identical to (same degree of horizontal fadeout into transparency):
I have spent hours on it trying to edit the original layer below the alpha transparency or adding layers, getting nowhere.
I have a B&W images. It's actually in RGB but all shades are gray. I would like to create an alpha channel whose values equal the brightness of each pixel. How do I do that?
View 3 Replies View RelatedThought I'd try Gimp on my new laptop instead of Photoshop. I'm making graphics for a game.
I needed to add an alpha channel to an image and edit it, including pasting into the alpha channel from the clipboard. Easiest thing in the world on Photoshop, but seems utterly impossible on Gimp.
I've looked at a few threads that discuss editing the alpha channel, and they make it sound like rocket science. Notable, most seem to involve juggline multiple other images and then following convoluted pasting operations to get anything down. Or using layer "Masks" which, as best I can see, are impossible to paste into (and I couldn't find how to convert these masks to alpha channels either.)
As it stands, I've failed to get anything onto an alpha channel at all, except some scribble that showed up in the tiny side icon but couldn't be seen in the main image.
I'm new to Gimp, and I'm hoping I've just missed something. What is the straight forward way to edit the alpha channel (drawing on it, pasting into it from the clipboard), and seeing the results at the same time. I've tried everything intuitive and nothing works.
im trying to add an alpha layer or alpha channel to a bitmap and save in BMP format.
I am using Photoshop 6.
I have a PNG image and like to edit the alpha mask. As there's no separate alpha layer inside the PNG image, but all pixels have a certain alpha value, I'd like to extract that with Photoshop. How can I do that?
View 4 Replies View RelatedIn short, I have two images open in Gimp. I need to add one the images to the alpha channel of the other image. How do I go about doing this? I was able to add an alpha channel but beyond that I am lost.
This bit will only make sense to 3D modelers. I have 3D model that I'm importing into a the Unity 3D game engine. One of the material shaders makes use of specularity maps. Normally the specularity map would reside in the alpha channel of the RGBA diffuse image, but due to file sizes, all these are released as separate jpegs. The idea is to make some parts of the 3D model more glossy as far as I know. The only way to do this is to add this specular image to the alpha channel of the diffuse image, and then the game engine can work its magic, making the skin look realistic.
I have an existing (grayscale) image that I want to make into the alpha channel for another image.
View 11 Replies View RelatedI want to change the size of the image in Gimp to 3957x4429 px (67x75 cm) at a 150dpi (the image we have has a 300 dpi.) When i do this in image - print size it keeps changing the width.
The system is not allowing me to get the picture a few cm larger. Is there any way I can overwrite this?
Is there any way I can directly make a grayscale image into an alpha transparency channel?
I mean, NOT involving selection? Because selection by color to layer mask,is really difficult what I need to do the selection threshold.
Why is it easy to turn an alpha channel into a grayscale image but not the reverse?
I already have an image file in png format..which I want to use as an application launcher icon for my android application.
The android specifies image with following properties for the launcher icon(Will need 4 different image to support different screen size in mobile devices)
Launcher icons should be 32-bit PNGs with an alpha channel for transparency. The finished launcher icon dimensions corresponding to a given generalized
Screen density are shown in the table below.
1. 36 * 36 px
2. 48 * 48 px
3. 72 * 72 px
4. 96 * 96 px
I would like to create 4 png files(with specifications mentioned above) from the already existing image file. How do I do that in GIMP.
I am completely novice to image editing(Never touched any image editing software before) and not sure how to achieve this in GIMP.
any difference between alpha layer and alpha channel? I mean has to be right? I just don't know what exactly that would be if there is. I'm trying to figure out some more stable uses for computer graphics when building textures with alpha layer or alpha channels. So far I get a flicker from opengl bug when using alphas. So I'm wondering if I use Alpha layer and something with a solid color underneath the geometry if I could achieve a more stable result where alpha sorting. Possibly clearing it up where my alpha layered geometry stays on top vs bleeding through at times it seems.
View 4 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.
I'm looking to change the way Gimp names the layers I create. I primarily use the application for 2D animation and would like to have the layer names be structured so that I don't have to change every one for each animation.
View 1 Replies View Related[URL] ..... I have an image of a garage door on a white house. I need to generate a layer with a transparent background that when viewed over the original house turns the siding a different color say blue. The idea is that once I generate that layer I can then generate more layers like it to change the colors on the different parts of the house.
What would be the correct process in GIMP to accomplish this?
Basically I want to merge two images. Both of them are grey originally so I change them to RGB mode and change the colours separately. I then go to copy and paste one image on top of the other and it automatically changes to whatever the colour is of the destination image.
View 2 Replies View RelatedI'm having trouble accessing text layers in a logo I am trying to make.
Each time I create text, it gets put into its own layer; that seems to be the way GIMP does things. I'm fine with that. However, once I've completed making a text layer and moved on to creating a second text layer, I can't seem to get back to the first text layer to make changes, such as the colour of the text or the size of the font.
The window for the graphic indicates that there are several layers but I can seem to get back to any previous layer. I don't see any menu options for accessing one of the other layers. PageUp and PageDown don't show me the different layers. It's as if the layer's content, colour, font, etc. can't be changed once I've started a new layer.
How do I access the layers that I created before the current layer?
I am using GIMP 2.6.11 and running on Windows XP Pro with Service Pack 2.
I am doing a project and I'm wondering how to remove the color from only a layer and not the image, which you do by going to image:mode:grayscale.
View 2 Replies View RelatedThe attached image has transparencythat I don't want.
What I would like to do is eliminate all transparency from the image so that I can then use the eraser tool to make transparent the areas that I want transparent.
I can't figure out how to remove all transparency from the image / layer. I'm new to paint.net, it may be obvious to others how to do this but not to me
The layer properties (where I thought I'd fix this) show opacity 255 now but the image still has unwanted transparency.
Attached Thumbnails
I sell a template that has a transparent layer in sections, after saving as jpeg it is supposed to go white, but for some of my customers it recently started going black!I at first thought it had to do with not pasting the layers correctly, but its like this after export, so I don't think that should matter...I've attached a sample image so you can see what is happening. Where it is black, it was originally transparent around the circle image, and normally would save white.
View 2 Replies View RelatedI have a GIF image that I need to add something to, but I don't want to add it to every single individual layer. Is there a way to add it over or behind the entire GIF so that it remains static while the GIF's frames cycle - like a watermark or something?
Or if not, is there maybe a script-fu that copies and merges a selected layer over every other individual layer automatically, without messing them up?
I know I'll probably have to just end up manually adding it to each layer, (so many layers...).
I've been using Photoshop CS2 for several years to enhance my photographs, but just now have encountered something simple I cannot find out how to do. I have on the background layer a picture of a room interior with the exposure set mostly for the open window, but the rest of the room is very dark. On the only other layer, the upper one, I have the same shot exposed correctly for the room, which overexposes the window area. The upper and lower layers are perfectly superimposed, and the upper layer is at 100% opacity.
I have selected the window on the upper layer and want to change the selected area's opacity to blend properly with the window on the bottom layer without changing opacity of the rest of the layer. No matter what I do, changing opacity seems to affect only the entire layer, and I haven't figured out how to isolate the selected area for the opacity change.
I can cut the selection to reveal the darker window on the bottom layer, but this doesn't give me the flexibility I need to balance the two exposures. An opacity change would be ideal.
I am trying to remove the person in the background of the attached image. I believe I have finally installed the resynthesizer plug-in but am not successful in removing the person behind the couple shown.
View 1 Replies View RelatedI have a black text image. It has a dotted cut line (ex - - - - - - - ) boxed around the image. How do I remove it ?
View 3 Replies View RelatedI have an image, of a woman wearing heels, and i wanna remove the old, crappy looking floor from the image, where just the feet and the heels are visible. Is this possible, and easy to do? Here is a link to the picture.. [URL] .....
View 4 Replies View Related