Photoshop :: CS3 - Use Existing Image As An Alpha
Aug 19, 2008
I have 2 x *.dds files. One is a default model texture (with no alpha channel) and the other is a lightmap, which has different visible graphics to that of the texture file. However, the alpha channel of the lightmap uses the texture file detail.
My question, as I need to recreate these from scratch, how do I import an existing image to another existing image and use it as a alpha channel. So far each time i have tried the original information is overwritten.
Here's a screengrab of what I'm trying to achieve. To recap, I'm trying to use image 1 as an alpha channel in image 2 (as shown)...
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Dec 4, 2013
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.
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Mar 25, 2013
I have an image which is simply a one color gradient, with transparency from nothing to something. I would like to be able to access the existing gradient on the image and change only the color. I have hunted high and low and cannot see how to do this.
(I am familiar with how to make a new gradient and how to change the colors in a saved gradient via the gradient dialogue. But for the life of me, I can't see how to access an existing gradient on an image and change only this one parameter.
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Nov 20, 2005
i have an image which has an alpha channel which allows certain parts of the image to be more transparent than others.
When you de-select RGB channel and only leave the Alpha channel selected you'll notice that the image has now turned into a black and white alpha image, where black shows complete transparency, and white shows no transparency. Is it possible to save this black and white alpha image? Incase you dont understand what im trying to do heres a picture.
I just took that pic off the net as an example of what i want (incase your wondering), so basically, all i want to know is, how do you save an image (like above) which shows the levels of transparency.
At the moment, i have to use the printscreen key on the keyboard to capture the image, which is very annoying because its extra work and if the image is larger than the screen it requires alot of aligning.
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Apr 29, 2008
I cannot find much on the web about it, how to use an alpha channel. However, none of them address this issue.
I use photoshop cs3 extended.
I am using png and tga image formats
When using an alpha channel, you can set the alpha to absolutely transparent. However, when you do and save the image it removes the other channel information on the rgb channels. This is problematic because I have to use a 1 transparency value to retain my rgb channels. This causes issues as I need the full alpha but also the texture information.
This is for texture work on a game and the engine uses the alpha channel for a team color overlay on top of the rgb image. So I need all 4 channels rgb for texture, and the alpha is a team color overlay.
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Jan 7, 2008
im trying to add an alpha layer or alpha channel to a bitmap and save in BMP format.
I am using Photoshop 6.
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Jun 4, 2013
I am trying to find a faster way to save my images. I shoot in raw, save raw images as jpegs after editing them in Camera Raw. I am using Photoshop CS6 on a Mac version 10.7.5. When I save, I either have to save as a copy of the exisiting image, or replace the image I'm working on. Other forums I've read said to make an action to save and create a function key to make this process faster, but my function keys aren't working, and playing the action I've created still makes a copy of the image.
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Jul 23, 2005
can someone tell me the easiers way to make an alpha tga file? Photoshop 7 can done alpha when i save to tga 32 bits, but in CS we have to do it manually...
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Jun 6, 2011
In 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.
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Oct 2, 2012
simple terms the following options in the JPEG2000 dialogue box :
-Wavelet Integers and Float. Explain wavelet in idot proof terms? What is the difference between the two types of wavelets?
-Tile size. What does it refer to when it says Tile? What's a tile in this instance?
-Region of Interest. What does "controls the quality within the image by using an alpha channel" mean?
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Jun 12, 2013
There is a touchscreen monitor in my car.It allows custom background wallpapers to be loaded via USB.The touchscreen automatically adds what would appear to be about a 25% alpha black layer in FRONT of the image so the touchscreen controls and icons are clearly visible.The problem is, I don't know what values I'm supposed to adjust on my image in order to get it to look the same way it does on my computer screen.Would you adjust the brightness? Contrast?Or is this simply not possible because the ~25% alpha black tint is placed OVER the wallpaper?
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May 27, 2008
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?
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Jul 2, 2005
I have an image and i'd like to turn that into a transparent gif/png file for a website (has a changing bg color at random). The thing is i don't know how do this, and could use some help. What I tried so far is that I add to the original image an alpha channel which is the original image inverted, but that did not show me the checkered bg.
Anyway I added a faked impression of what i want to achieve. Thanks for any tips on how to make this work.
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Sep 5, 2013
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.
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Nov 6, 2012
I'm using Xfrog trees (first time, and quite new to 3ds max design 2011).
The leaves are images laid onto planes. The leaf has a white background and is precreated to be transparent etc.....
In theory i should be able to import the tree, render and everything should work. it's not working. The tree renders with the white background to the leaves
Is there a setting i'm missing, maybe in the render setup?
AutoCAD Certified Professional
Win 7 Pro 64bit, Dell Precision M6500
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Mar 21, 2012
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?
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Aug 5, 2013
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].......
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Jul 24, 2011
Thought 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.
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Feb 12, 2013
How do I take say the black and white version of an image and use the final grey scale value as the alpha value for that pixel on the original? Is this possible to do easily?
If not, what's the hard way?
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Nov 28, 2012
I'm a beginner of 3ds max. I have trouble with getting alpha image from Vray frame buffer.
My scene is very simple
-2 Objects with Vray standard material
-Vray plane
-Vray dome light
Even when I render as Tiff data, I can not see alpha image. It is all white. How to get alpha image. And also is there anything else good way to get alpha image by the each object(without using matt/shadow material)? I used 'VrayWireColor' from 'Render Elements' but the image edge has slightly white frindge...
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Jul 27, 2011
I have an existing (grayscale) image that I want to make into the alpha channel for another image.
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Mar 17, 2011
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)?
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May 17, 2011
I was simply wondering the best means in Paint.Net to use a black and white image and use it as the alpha channel of my image, with white being opaque and black being fully transparent. I looked through the plugins on the site and didn't see anything that seemed to resemble what I was after.
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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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Jan 25, 2007
smoothing out a hand drawn image. I have the picture of a tribal tattoo and I'm trying to smooth the edges (they look rough at the minute) so it looks more photoshop-made? But I'm having trouble.
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Nov 28, 2012
I got single clip in desktop and it got an alpha embedded. If i drag that clip into the cfx , the clip will be interpreted correctly where alpha will be recognized. The problem in action is when i drag into action schematic, the alpha is ignored Smoke should know if there's alpha embedded then by default it should use it. ANother problem is when in media list , i add new media then click the clip twice (to grab F and M from the same clip), the result : i got blank alpha. Again it should load the alpha while there's alpha embedded . I think , this should become the dafault behaviour to deal with alpha. Although loading this clip in cfx schematic will solve the problem, i think the action still need to be fixed.
Also it should be cool feature if i can drag the clip from library and drop it in media list , and it will replace the media of the selected item in media list.
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Oct 21, 2012
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?
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Dec 15, 2011
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.
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Jul 6, 2013
I have an image that is mostly alpha.Problem is that it blocks buttons from working.Is there any way to set a flag to an image so it is not part of the 'touch/mouse' collision funcitons?
i can arrange it behind the buttons... but that brings other issues, because something needs to be behind the image with alpha but over the buttons.
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Aug 23, 2007
I have a few png images (from a PD image disc) on a site I made, and the set came with pretty much all the variants I need. However I find I need an up and down image, but only have a premade up.
What I'm after is a matching down. I do have a blank if thats going to make things any easier.
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Nov 25, 2005
I need to add rectangle shapes to an existing image.
I tried using the rectangle tool but each time i click on the background option after the rectangle is drawn, it disappear.
The rectangle will only appear again when i select the rectangle shape from the layer panel.
Is there anyway where i can make the rectangle show on the image?
i tried reading up some of the thread posted and i saw some thread mentioning doing something to the path. How is the path used?
I'm not really familiar with using paths and layers, so i need a really layman's term of explaination.
For more info, i actually set the colour of the rectangle fill 100% opacity 100%.
anyway wat is the purpose of setting opacity?
cos i tried ranges between 0 - 100 and there doesn't seem to have much difference.
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