Combination of alpha channel selection

Similar Questions

• Manual exposure with alpha channel

  I have 3 shows a photo in Photoshop. I would like to manually mix the layers using an alpha channel (identify areas of exhibition as a channel of luminosity) and a layer mask. Firstly I have Ctrl-Click the RGB channel to make a selection for the first exhibition. I then create an alpha channel of this selection. After that I press ctrl-d to cancel the selection. I then select the layer I just create a channel with and then I alt-click on create a mask at the bottom that connects a black mask to this layer. Following that I will come back and ctrl + click the alpha channel or just load the selection, and then use the Brush tool (which I have reset several times) with a white foreground and black background, I paint in the underlying layer, however it does not work. Previously I could only paint in the layer that was selected by the alpha channel, but now the brush just exposes all the parts of the image even outside the selection. I noticed that if I manually magic wand parts of the picture and try to paint in the layer, it works, but using the alpha channel selection is not.  The Brush tool will not be forced to alpha channel selection, when it is trying to reveal the underlying layer with a mask of black layer applied.

  Your selection is not pure & white black (completely hidden, or completely unmasked based on the limits of the mobile dots you see on the screen). If you save your selection as a channel by selecting select > Save selection..., you will see the alpha is composed of gray tones, which means that you can see the brush strokes (although slightly paler) appear outside the moving dotted line.

• How to create a current transparency alpha channel?

  I have an image I created in Photoshop CS3 with a drop shadow on it and transparency around him.  I need to save it in a file TARGA 32 bit with an embedded alpha, so that transparency and drop shadow work when I bring it in my video editing software, but when I save on as a 32-bit .tga he does not save an alpha with her.

  I think remember me Photoshop automatically an alpha of your transparency created when registering on a 32-bit .tga. What I am doing wrong?

  Thank you.

  I think the alpha channel saved in Targa files in earlier versions of Photoshop have been removed in later versions, because the spec targa itself says nothing about the embedded alpha. Instead, the programs were required to read an info of transparency targa files directly. It was then changed to the way that it used to be - you will need to integrate an alpha transparency.

  However, here's how to save a channel alpha with your transparency information:

  First of all, to create layers of your layer effects (shadows etc - right click effect, will create layers)

  Then, ctrl-shift-click on each layer in your file.

  Then make a 'New Alpha Channel selection' in the palette layers.

  Mathias

• A selection of Alpha channel with the color of foreground fill layer

  This question is more theoretical, because I found a work around. On a layer, I have a gray color, that I sample, and it becomes the desired foreground color.

  I would like to fill a selection in an Alpha channel with this gray color.

  However, when I view the Alpha channel, my forground color is lost for black and white, I understand, because the Alpha channel is a grayscale image.

  But I'm able to taste a shade of gray to a foreground color, but how can I keep my chosen original Gray selected from a layer? The only way I know would be to make a new shade and then use it when I'm in the channels.

  Hope I am clear.

  Thank you

  Sonny

  Don't know what you're saying. Sampling the RGB would eventually produce the colors 'Sales', aynway. This apart, of course sampling one color produces 3 values for all 3 components that define the color that can be applied directly onto a single channel a sense or the other. If you must have an 'academic' way to fix, you need to associate mathematics channel as for example combining the Red layer with Alpha using calculations of the image or creating a separate channel which holds the light / gray value. However, if your swatch method works for you, I see no reason to geek. Sometimes simple, hacky techniques are most effective...

  Mylenium

• Select the shape of an object on an alpha channel

  I want to select the shape of my object in my alpha channel to add a mask.

  

  Effect > prospects > drop shadow

• In Gimp, there is a command called "alpha to selection". Who selects the alpha channel only. What is the equivalent command in Photoshop?

  In Gimp, there is a command called "alpha to selection" which automatically selects the alpha channel of the image or layer. What is the equivalent command that in Photoshop? I tried Googling it but everything that comes is tutorials on masks. I just want to know what to select the alpha automatically without using a 'magic wand' to select one by one.

  CMD (mac) or Ctrl (pc), click on everything that has transparency and that load a selection. This includes layers with transparency, masks layers, channels and paths. Also, there is a selection at the bottom of the layers, paths and channels Panel icon that looks like a dotted circle.

• How to properly edit a selection before the economy like an alpha channel?

  I thought I could just use QuickMask to paint manually with 100% black or white to 100% to set the boundaries of the selection and then save this final selection under my alpha channel.

  However, I discovered that when I do that, I end up finding a strange artificat ish (which by the way, I can't understand how to remove it).

  I would be grateful if someone could tell me how I should be correctly change the selection before you actually save it.

  Thank you!

  

  You're not painting with a pure black:

  

• combining alpha channels?

  Miss me something really obvious here, but what is?

  
  

  
  

  I want to have a topic casting shadow on a background of moving clouds. Here's the clip up to now using a method that does not work well enough:

  
  

  
  

  
  

  
  

  The shadow does not work on the darker parts of the cloud. This really isn't so much of a prob in 2D, but it is a stereo 3D project and have the shadows disappear intermittently seems odd.

  
  

  
  

  For example, to create a shadow that I can then insert between the two Images, I need to combine two video alpha channels (the one created using green as a key, the other the blue of the sky).

  
  

  
  

  How do I do that? I bet it's really obvious!

  
  

  
  

  Cheers! http://forums.Adobe.com/images/emoticons/wink.gif | ___jive_emoticon_name = wink | jivemacro = emoticon | class = jive_macro jive_emote: src = http://forums.Adobe.com/images/emoticons/wink.gif !

  
  

  
  

  
  

  Currently using CS5

  Use effect channel juggler or things like change the channel to expose several channels and merge them differently. Or you could use a demo that has duplicates of your stuff and then use matte and stencil blending modes. It's really just a matter of using each other and combining them intelligently...

  Mylenium

• Select the Alpha channel, such as layer effects

  Hey,.

  If I hold down the CTRL key while clicking on a layer, I get Alpha channel to selection features, which is exactly what I want, but the function includes all the layer effects.

  In particular, I would like to take the drop shadow effect.

  Sort easily accomplish what I want? I use the selection to copy/paste the pieces of design for use on the Web site design.

  You can target multiple layers and drag them as a unit, on your document design and in your design, you can merge them into a single layer.  When you merge layers, they are rasterzied which will include the layer effects.  This will leave your original document intact with its layers and the layer styles.  If in your description you do not merge the layers move layes them will be intact, layer styles. If merge you them the you'll one layer with the applied end styles and the merged layer will not have a layer style itself.

  I don't know if when layer styles are applied when the merger if these layers will mix in the lower layers as layer styles would be if you start to change the lower layers, after you merge layers.

• Save the selections compared to making them alpha channels?

  When I started to dabble with Amnesty International, many years ago, I saved selections as alpha channels and reloaded them as needed, but now I see that you can just save them in the Select menu. Is there a reason to do it again through the alpha channel? There are pros and cons either way?

  Thank you.

  I think you're confusing this with Photoshop...

  Mylenium

• Action to combine separate images and alpha channels

  I have a sequence of images 200 + each with a separate file, corresponding alpha channel which should be recombined in photoshop. Ideally, I would like to load each image as a layer and the corresponding alpha image as a mask to this layer, and then save the entire file as a .tiff.

  The files are in the order IE results)

  Image_1

  Image_1_alpha

  Image_2

  Image_2_alpha

  Image_3

  Image_3_alpha

  ...

  I am familiar with the actions and batch processing, but something of this magnitude is beyond me. I think there should be some kind of custom script or action. Ideas and help is appreciated!

  So I sort of found a work around that is not as intuitive, but works using measures.

  Basically, I opened a pair of side-by-side images in PS it is)

  Image_1

  Image_1_alpha

  and performed an action where I copied the image alpha basically and pasted as a mask for color image. I then added a record and double closure order to close both files.

  If I open all my files-by-side in sequence and perform the action that I can treat all my files but need to manually run the action rather than use a drop or a lot.

• Alpha channels does not not how they should?

  Hi, I'm new to this forum, but has decided, it would be the best place to get feedback on what I can hurt. I use photoshop for a few years and recently updated CS4 however my alpha channels do not work how I think they should.

  When I open an image, I use the Panel layer and click on the little icon down to 'Create a new string' but no dialog box is displayed for me to quote my channel. Also, my understanding is that a black fill covers my picture that when adorned with white would reveal the image below. However when I paint on my channel by using the tool brush and white color just finishes of paint on my image.

  Either by the way, I'm trying to use this channel to create and save a selection, I don't understand where I'm wrong, but any help would be much appreciated. Thank you in advance.

  Alpha channels are an image in grayscale showing what is / is not selected. White is selected, unselected black and gray are partially selected so if you make a new black alpha channel and command + click top then you won't get that no pixel selected error.

  To use layers alpha masking, you usually copy the channel you want to use by dragging the button channel new channel (you must drag the channel here, not just click on the button new channel), then any changes you want to apply. You can also use Image-> calculations to combine two different routes in an alpha channel.

• An Alpha channel in 5 motion editing

  I used chromatic key successfully in many video projects Motion 5, but now I am interested in editing and in some cases, remove a layer alpha to any clip. I have read the user manual and learned about the export of the video using Apple ProRes 4444 and ensuring the drop down choices include color or color and alpha, but I think my question just before exporting.

  I bought video clips for use in my projects with alpha channels deleted and I would like to explore using this kind of function change myself.

  I'm just exercise wishful thinking here or is to detach the data of possible alpha channels in the query editor 5 no matter where I export the video?

  Thanks for any help to a novice Editor to the-middle-level-qualified.

  Bob T. Editor-in-Chief in manufacturing...

  Well,... no way alpha... ? something, some content, for example a solid color

  and it is set in the project properties, see:

  

  the two parameters of canvas even look: black.

  but when exporting with the setting on the right, instead of an alpha = transparency, the selected color fills the background.

  -What are you looking for?

• keep an a 1 bit image alpha channel

  Greetings!

  I do a lot of pre-press and the restoration work for printing, mostly working with equipment that requires released as a 1 bit image - very fine line work and mechanical tones that will break or cause the moire if printed with dithering.

  For this reason, when you work with commercial printers I've out usually images with superior typical resolutions - 1 bit 2400 ppi files, i.e. the same their imagesetter resolution works.

  I have a request current a client that involves, at their request, to place images with transparency in Indesign rather than manipulate raster images in Photoshop and just out of the final 1 bit image and placing in Indesign.

  So, I was playing with alpha channels to try to find a solution to this. Is there any image format that will support two channels - one for a piece of mono ppi (1 bit) 2400 line drawings and the other for an alpha channel that will be used to hit transparent sections in Indesign after the fact? Is this possible?

  I COULD simply threshold - adjust my image to make pseudo-1-bit and then place the file in Indesign. But it's a big waste of space (the file resulting in dozens of times larger) AND it makes it more likely that someone will accidentally mixed the image during the RIP to print, thus defeating the objective of providing a high resolution 1-bit image in the first place.

  Please, please, anyone out there have any advice for me?

  Best,

  
  Sean

  Well, the next day-

  I read some more about how little coding works on different file formats. There is no place for the information/alpha channel for transparency on image 1 bit because, well, there is only a single bit, i.e. two States - on (ink) or disable (paper). If the shutdown state is managed like a white by Indesign, or the stop State is managed as paper and is presented in a transparent manner.

  So what I really need, is a 2-bit image format. A PNG. While there are four States - on (ink), (off-white) and another way for transparency.

  So I have 'threshold' converted by alpha channel and my channel of the image, then to export--> save for Web (inheritance) and selected 4 color PNG. Voila! Perfect bitmap 1-bit with transparency.

  Now, if he is a pretty good solution for my printer and their Raster image processor, we get to see!

• How can I make a stronger alpha channel?

  I was using Gimp to make stronger with adjust the curves of colors of alpha channel and selecting Alpha.
  How it can be done with Photoshop CS6?

  What I want to do is to make more visible alpha channel. In my case, it's simple image of triangle.

  

  In the case of the triangle. If black pixels have a certain transparency and you want them to be fully opaque, the magic tool you want to select the triangle, then fill it black.