I'd like to save a quickmask (or channel/path) that can be applied to multiple other pics. I'm in need of a mask so I can color the same parts of a texture file (dds) for various colors and on 3 or 4 different texture files.
I understand a quickmask/channel/path are all related, but is there a way to transfer this mask to other pics?
I have a series of images with alpha channels what I want to separate out from the images and save as a new file with a filename suffix.
For example I have a series of folders containing thousands of images:
These files are filename.dds files (I already have the .dds plugin to read them but you could use .png for example).
I load the image, goto Colours - > Components - > Decompose :
In the dialogue I enter color model : Alpha, tick decompose to layers - > OK
I then export the file as filename_a.jpg
Is there a way to batch this process for the 1000's of images I have?
I have a 48bit RGB TIF file, and I would like to save just one channel from that file as a 16bit Grayscale.
Having done a bit of digging, I have found numerous ways to convert the whole image to Grayscale, with varying degrees of artistic control, but nothing about ripping out a single channel.
Can it be done? How? Have I just overlooked the obvious somewhere?
I would like to do this with as little user intervention as possible as I'm likely to want to do it, in batch mode, to a lot of images.
PS: I have no objection to a solution that actually saves all three channels in one operation, each to a separate file. I can always throw away the spares.
Do I need to convert the original hi-res image file somehow to be able to save for web?
View 5 Replies View RelatedI have a PNG file created in Photoshop and I need to save it with an alpha channel for web purposes. I tried 'Save for Web & Devices' and selecting the Transparent box.
Then, after saving, when I select 'get info' for the file it says there is no alpha channel. I'm stumped I can't seem to create an alpha channel from within Photoshop while I'm editing.
I would like to create seamless greyscale patterns in AI CS6 by using typical Vector-Tools, Gradients and Transparency.Output however needs to be 16Bit/Channel RGB - 256 greys are clearly not enough on the Gradients, they would lead to nasty artifacts in the intended field of use explanation here.I realize that AI is 8bit and that internal Image-Conversion from Vector clearly was no option.The underlying question for me is - does AI also internally work with just with 256 shades of grey in its gradients too?Or was there theoretically a way to pass smoother Vectors over to PS which in contrast to AI can save 16 bit Gradients?All I tried thus far (importing AI though Clipboard as Shape-Layers/Smart-Objects) yielded unusable results for what I'm after.
View 18 Replies View RelatedI get the idea to save my processed RAW files in jp2 jpeg 2000 16 bit format(channel) so they need less space as RAW or tiff and can be later good modify without noticable quality loss. But i get the requester, that the format support only 24 bit ( 8 bit/channel)
jpeg 2000 is here since 10 years. Is it not possible that windows or other programs can read 16 bit /channel files, or whats the reason wy it is not possible in PSP X4 upd 1 to store such files ?
Does other programs too not support 16 bit /channel jpg ?
I have a 24bit PNG image to be used as a texture in my little game. I want to blend this texture with other colors which require it to have an extra alpha channel. I did some search online and tried some methods including add another layer and add transparency to the image, but neither worked(after I exported the image to png and reopened it, it still only contains 24 bits for every pixel).
View 4 Replies View RelatedI'm using 2.6. How do I add an Alpha Channel?
I can't find it in the selections.
I will select a section of an image using the lasso or magnetic lasso, click on the quick mask icon and it highlights the areas as you expect it to. Set the foreground color to whit and select a brush to touch up the edges, but when I try and touch up, the brush does nothing.
Same thing for the erasor, they do nothing at all. Where is the problem?
it seems to work with loaded brushes and not the default brushes.
When I use Quick Mask for masking an area that I want to copy and paste, then go to standard edit mode, I see the marching ants, so far so good, except when I paste the Image into another image it's looks too be about 25% transparent.
If I use lasso tool too do same thing, no problem, no
transparency..
What's happening? I've reloaded the program twice now,
problem still exists.
Is there an easy way in GIMP to invert the alpha channel of an image? Transparent should be opaque, opaque should be transparent, almost transparent should be almost opaque, etc.
View 4 Replies View RelatedI 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 RelatedI'm trying to create an image which emulates a solar corona (it's basically just a blurry circle). It's as easy as making one brush stroke in gimp, but my problem is that i can't get all the channels to be correctly set.
Ultimately i just want to edit the alpha channel, NOT the RGB ones. They should all be pure white, or 255, 255, 255. But for some reason, no matter how much masking or color selection or clicking only the alpha channel and not the RGB ones or anything that i do, i cannot keep the RGB white while editing the alpha channel, every stroke that affects alpha seems to invariably affect the other three.
How can i edit ONLY the alpha channel?
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.
I can't get quickmask to work correctly in photoshop. Each thing I try to mask and then copy ends up having 50% or so opacity. All the layers are at 100% opacity, and in the quickmask options opactiy is also at 100%. Anyone know what could be wrong?
View 5 Replies View RelatedMy link but when I get to the part where it says to add the alpha channel - add alpha channel is greyed out in gimp.
I'm using Gimp 2.6 - windows xp.
Is it possible to directly edit the alpha channel? I need to edit it for a 3D model I've made, and its showing up as too shiney (The engine is looking at the alpha for reflectivity).
However, I have yet to see a way to edit the alpha channel directly.
Basically I need to be able to add different information into each channel including the alpha without the image being transparent at all.
Not to compare at all, but in photoshop i could work solely in the alpha channel without the RGB channels visible, then enabling the RGB channels would allow me to see the entire image without any transparency.
Basically, i want to be able to use the alpha channel for things other than transparency. For storing different masks in each channel for use in shaders.
I know how to add alpha channel to each layer individually and manually but is there a way to have an alpha channel added to each new layer automatically?
I'm using 2.8.2
I started using gimp yesterday to remove backgrounds out of images for my website so have done it fine.
But now I clicked on something which reduced the toolbox dialog box to not be as large - ie it does not show you pixels size etc if you select pencil tool now.
Also I open an image and lasso it - then click the quick mask but the pencil tool is not adding any more to the area - it wont draw over or anything. The lock alpha button is on in the layers panel and I cant unlock it.
I have an existing (grayscale) image that I want to make into the alpha channel for another image.
View 11 Replies View Related1.I am working on a project where I need to set all pixels below a level as alpha channel, is there a quick way to achieve this? The level can be both set a prior or adjusted dynamically, the second way is preferred. Right now my workflow includes:1. duplicate layer.
2. use color level in duplicate layer, in menu COLOR -> LEVEL.
3. add alpha mask to original layer
4. copy duplicate layer into the alpha mask of the original.
5. delete duplicate layer.
6. If result is not ok then return to 1.As you can see this workflow is a headache, specially point 6 which is often achieved.
I don't do a lot of digital coloring or painting but when I do it's very comic book style. I have a method I use (you hay have seen it at polykarbon.com.)
This is how it works. Get some good clean line art in RGB mode.
In Channels, duplicate the blue layer and INVERT it.
Go back to the Layer fill the whole image with white. Then create two new layers above the background layer.
On the top layer, go to Select and pick Load Selection. Pick Blue Copy. You see the marching ants.
Fill this selection with black. Now you have a layer of your line art, a middle layer on which you can color without messing them up, and then a background.
I haven't been able to do this in Gimp. I'm willing to learn a new coloring method but I really like this one. It's easy and fast and really allows for a lot of customization. You can color the lines, do masks, etc.
My problem is the part about INVERTING the channel.
I have some textures, and i am trying to pack them into texture atlas. All of them are RGBA png's generated with PIL (Python Image Lib). I am opening all of them in gimp and copy-pasting them into their new place in texture atlas.
But i have noticed something strange, i am storing specular map in alpha channel of my diffuse textures, and emission value in alpha channel of normal textures.
The problem is, that GIMP does not copy pixels with 0 alpha value into clipboard. So, when i am trying to copy a normal map from source to atlas, and if emission value is 0, then GIMP is not copying anything, i am getting empty layer pasted into my atlas, if there are 0 alpha value pixels in diffuse map they are not copied to destination, even selection outline shows that there are no pixels in places where specular is set to 0.
I have a PNG logo that has anti-aliased letters on a transparent background. In other words, all pixels are white (for example) and either 0% transparent (in the letters) or semi-transparent (in the anti-aliasing). The rest of the image is transparent.
What I'm trying to do is take change the color of the logo. Bucket fill in normal mode changes the alpha value of the semi-transparent pixels to 0% transparent when applying the color--so I loose the anti-aliasing. I did manage to get what I want with bucket fill mode Darken only, but this only works for certain colors on certain other colors (I can change white to any other color, but not vice versa).
Is there a straightforward way to fill a color while keeping the alpha channel intact? I tried all the modes, and also modifying the Fill transparent areas, but don't really understand them to figure out if one does this in the general case.
I made a complicated selection, which I saved to a channel. Then I inverted the selection and tried to delete the inverse (hopefully to transparency, but deleting to a background color would be better than not deleting at all). However, nothing happens when I press the delete key, or when I select "Clear" from the edit menu. Trying to use the Cut command doesn't work, either.
After deselecting, I can get the selection back through the channels dock, by right-clicking and then choosing "Channel to selection" or "Add to selection." It appear to replace the selection from the channel properly. I just can't delete anything.
I'm trying to put a pattern around an object that needs alpha channel in the middle, but when I make a new layer and add the pattern, then select the area and use "Color to Alpha" it doesn't work. The pattern in that area is only turn slightly darker, not alpha channel.
View 1 Replies View RelatedI have removed the background from a photo using selection deleting to transparency via alpha channel. My dog was left. I then exported to png. When I try to upload the dog to use in a label, (Open Office), the back ground turns to white.
What am I doing wrong?
I am using Quickmask a lot, and I find a few of the user interface issues in it befuddling.
1) Sometimes when I change to quickmask mode (Q key), the foreground and background colors reverse. Sometimes they don't. Right now they do on one computer but don't on the other. I have never been able to figure out why this is, or what I can do to change it. (FWIW, I find the reversing of colors to be most confusing, and I like it when they don't change).
2) When I go into Quickmask mode and then out, my selected layer changes. If I have a layer mask selected, then hitting the Q key twice will change the selection from the layer mask to the layer pixels. I can't tell you how many times this has led me to edit the pixels rather than the mask. Is there some way to turn this off, so that the layer mask stays selected? (If not, I'll post this as a feature request).
3) I tend to work in full-screen mode. Is there some easily-recognized cue to whether I am in quickmask mode or not other than the hard-to-see "pressed" state of the quickmask button? I am continually getting confused as sometimes when I am working quickly, it seems like the Q doesn't register, so I hit it twice, and then I spend a few seconds trying to figure out which mode I am in. I like the text in the window frame which gives me instant feedback of my status, but I like the extra pixels of fullscreen mode. Is there another option that gives me full screen but easily-seen feedback on my editing mode?
I'm using Photoshop CS 6 for Macintosh.
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?