Select the Alpha channel, such as layer effects

Similar Questions

• 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.

• 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

• How to view the alpha channel of the layer mask in the layers palette?

  Help out me people CIHI...
  CS5 using - in the past, when I added a layer to a layer mask, it would appear in the palette as the alpha channel, which was very convenient. Now, when I add a layer mask, it appears only as the icon of mask; that is, square gray with a white circle in the middle. I have no idea what I did to go from one to the other, but I'd like to return the alpha representation!

  TIA,

  Toby

  Looks like you have set the layers panel to "no thumbnails. Right-click on a layer thumbnail (not a mask thumbnail) other than the bottom to see the thumbnails options.

• How to set a solid as the Alpha channel?

  Hi all

  At my wits end on this.  Seems to be a basic after effects thing, but I can't find seem to find the answer online or on these forums.  Maybe I'm he read the wrong way.  Well, here we go anyway...

  A layer inside my computer is a solid red.  This solid has a mask on it, while the visible part is only a red circle.

  Now all I want to do is tell AE that when it restores this model as a QT Animation, the solid red is the alpha channel.  Seems simple enough, right?  What is the right way to do it?

  Thank you!

  As you may have guessed, it's easy and you will find that you use much - basicallly, whenever you want to hide something, but not a not the mask move with the layer...

  The solution:

  First of all, make sure you have column mattes expanded on the timeline (small box below on the left mask/shows this).  Place solid directly above the layer you want to mat (if you have a lot of layers, you precomp it).

  Then, on your layer of film (below the solid), the value of the Alpha cache - which will be Matt on this layer based on the alpha of the layer above it.

  Alternatively, you can use an effect, in my view, that is define Matte, and then select the matte layer.

  A method other than Milenium often mentions, but I've never used is to assign the matte layer silohuette alpha - I think the mat layer must be defined as an adjustment layer.

  -Dave

• How to add an image to the alpha channels

  I want to add an image in black and white in this layer alpha https://gyazo.com/f3507eaa453f720bf7257ed9f7725404

  But I can't get a picture on it. Any help appreciated.

  1) press A ctrl or cmd - A on a Mac to select the content of your layer or simply select all from the menu bar.

  2 in your layers panel, select your alpha channel and then issue - special paste - paste in Place

  The contents of the layer doesn't have to be black and white as it will be converted to grayscale, but depends on the type of mask you're trying to do.

  Hope that helps

  Terri

• Photoshop CS6 using javaScript to truncate the name of the alpha channel

  Hello

  I am a production artist and I work with PSD files created in Adobe Scene7's Image Authoring Tool. These PSD files contain a background as well as the alpha 1-20 layers layer. My script should make a new empty layer for each alpha channel in the document. He then fills the new grey layer. So far, my code accomplishes this mission. However, I would like to apply the alpha channel of the layer name, but I need the name will be truncated. Each alpha channel begins with one or more characters, followed by a bar backslash and then ends with one or more characters. Here is an example:

  An alpha channel can be named: Floor\floor

  In this example, I need my name of layer to be fair: floor. This means that all characters to the left of the backslash, including the backslash itself needs to be scrapped. I used the subSring() for this statement. When I try to step through the code line by line in ExtendScript, I immediately get an error that says no complete string constant and line 31 of my code is highlighted. I think that he doesn't like the way I wrote the backslash character, although I have it surrounded by double quotes to define it as a string.

  Can someone tell me why I get this error?

  Here is my code with a lot of comments to guide you through the process. I wrote where the error occurs in red characters.

  I'm new to JavaScript, so I'm not sure that my while loop is accurate.

  #target photoshop

  #target photoshop makes the script execution in PS.

  declare the variable to contain the active document

  var myDoc = app.activeDocument;

  declare the variable to hold the number of alpha channels, excluding the RGB layers

  var alphaChan = myDoc.channels.length - 3;

  Alert ("alpha channels exist" + alphaChan);

  create a loop to make new layers depends on the number of channels alpha, fill layer with gray and apply the name of alpha channel to the new layer

  for (a = 0; a < alphaChan; a += 1) {}

  make new Virgin layer

  myDoc.artLayers.add ();

  fill empty layer with gray

  var color = new SolidColor();

  Color.RGB.Red = 161;

  Color.RGB.Green = 161;

  Color.RGB.Blue = 161;

  myDoc.selection.fill (color);

  variable stores the name of the alpha channel

  var alphaName = myDoc.channels [3 + a];

  variable stores the length of the name of alpha channel

  var lz = alphaName.length;

  declare the index variable to initialize the character position 1 the name of alpha channel

  var x = 0;

  truncate the name of the alpha channel by removing all characters preceding the symbol "\".

  While (alphaName.subString (x)! = ' \ ') { (ExtendScript gives an error for this line and highlights the backslash and surrounding quotes) }

  alphaName = alphaName.subString ((x+1), z);

  x += 1;

  z = 1;

  Return alphaName;

  }

  remove the backslash in name of alpha channel

  alphaName = alphaName.subString ((x+1), z);

  apply name truncated to the corresponding layer alpha channel

  myDoc.artLayers [a] .name = alphaName;

  }

  While (alphaName.subString (x)! = ' \ ') {}

  should be

  While (alphaName.subString (x)! = ' \ ') {}

• How to re - apply a mask after changing the alpha channel?

  Hello

  I am writing a plugin that modifies the alpha channel of the layer.

  My problem is I want the mask effect to apply after my own effect.

  For example, I found a few pixels that were originally invisible (their original alpha is 0 and I put it to the maximum), but I don't want to reveal the pixels that are killed by the mask.

  I tried to use PF_MaskWorldWithPath, but how do I find the values that are used for the feather and opacity?

  It seems possible to find them using AEGP_GetNewMaskStream, but I could not find any description of how to interpret the results, not to mention that it's very complicated to get all the handles that are required to use this feature because my plugin is not CEAP.

  And on top of that, it doesn't seem to be a way to simulate the extension mask feature.

  No idea how that was possible?

  Thanks in advance!

  My friend

  you have stumbled upon something large and problematic.

  Let's start the bad news:

  You can not PF_MaskWorldWithPath make the expansion of mask for you.

  It doesn't have this entry. to re-create a master expanded, you will need to make this mask on your own.

  given there is no extension on one of the masks, you could use PF_MaskWorldWithPath on each mask and composite in transfer mode right on top of the other.

  finding the original matte for the layer masks.

  Yes, it's an awkward process, but it's the only way to use the mask data for a cache.

  to read the pen, opacity, all other values of the mask, you use AEGP_GetNewMaskStream or AEGP_GetNewMaskOpacity (I don't know what functions separated for the opacity).

  and then AEGP_GetNewStreamValue to access the actual numeric value.

  There is another method, you can use, which is not perfect, but much easier to use.

  get you initial pixel in the layer using a hidden layer param and PF_CHECKOUT_PARAM (or checkout_layer for smartFX).

  compare these original pixels (which have no masks applied) to pixels in entry of the effect (with masks applied to them).

  the difference between the two alpha is (for the most part) the matte of the masks.

  assuming that your effect is first in the stack (or the first affecting the alpha), you should get one if bad no solution that would allow you to save a world of hurt.

  trying to recreate precisely the masks.

  There are even more complicated shapes, involving layers dummy and artificial effects, but it sems to me as if he didn't miss the point.

  I hope this has helped.

  :-)

• How can I fix a problem with text wraps where Indesign wrapped text without overtighten the Alpha channel, I created?

  Hello.

  I have a text wrap the problem. I created an Alpha channel in Photoshop on a pic and placed in Indesign and wrapped text. Problem is that the text wrapping is quite different from the Alpha channel created. It's never happened before and I use it all the time. Ideas?

  Perhaps because the image is so low resolution.

  Yes, I see the same even at 300 ppi. If I load the selection of the alpha in Photoshop and save it as a path then it works:

  

  

• Basics of the alpha channel of Canon 7 d video

  Maybe I'm missing something basic here, as I am fairly new to play with alpha in VIDEO layers/channels. Otherwise, I have a pretty good understanding of the alpha when it comes to photos, animations, etc.ffects

  I'm doing the black in a video of a few flames in an alpha channel, so I can use them in the form of particles in After Effects.

  (like in this video http://www.videocopilot.net/tutorial/green_smoke/ ( )

  I understand the restrictions codec/format for alpha channels, but the problem is that I can't get the black to come out at all as an alpha channel.

  I have tried Quicktime with no codec and FLV and other formats that are supposed to support alpha channels.

  According to me, what is the problem is format that shoots in the Canon does not have an alpha channel in native mode to export the video in different formats is not having an effect. If this is the case, how should we do the dark parts of a video in an alpha channel.

  I know there are ways to make green in a channel alpha (filtering). I can't for the life of me figure out how to get scars OR Prime Minister to acknowledge the black straight as an alpha channel however.

  I watched a few 30 tutorials trying to understand this point, but it seems that I am unable to ask the right question to get the answer I want.

  

  There are the export parameters.

  Perhaps someone can point out my gross missunderstanding of what I'm trying to make, or otherwise put me on the right track.

  Here's a clip of in aftereffects, the arrow shows that the clip has properties alpha... I think, but when I turn off the alpha channel EVERYTHING disappears.
  I have to d something in the aftermath?  I don't know, I'm lost.

  

  If anyone thinks they can help I'm willing to do a youtube video showing what I do.

  PP will never recognize black as an alpha channel.  You have to eliminate the black using the Luma key.  As long as it has nothing else underneath, which retired black will be encoded as an alpha transparency.

• How can I exit the alpha channel in first 10 items

  How can I exit the alpha channel in first 10 elements. Should what format I use?

  Out tried in a net AVI but the file did not contain an alpha channel that would recognize After Effects 5.5.

  Unfortunately, you need transcoding video to be "millions of colors +, ' where the + is the Alpha channel. As Steve mentions, is not a capacity of the machine of transcoding in the meadow. PrPro which offers a variety of formats. Same transparency (Alpha channel) is not available for FLV, off pre - only PrPro.

  Sorry for the bad news.

  Now AE CS 5.5 has the big, new RotoBrush, which might be useful for what you need. Make you a common export/share and then use the RotoBrush AE to create transparency (chroma). Just a possibility.

  Good luck

  Hunt

• Select the physical channels of front panel

  Hi all

  Currently, I am trying to build an execuatble file which is dummy proof and has variations of the application is available.  I'm currently trying to give the user the opportunity to select the physical channels of the façade, through a group of check boxes or buttons... etc.  Then I have an array of strings containing all the names of the channels. I tried to run it through a loop with a structure of business inside and what false, the column of the table would be removed.  Instead, I get a blank table column, what does not work when he goes to the node of the active channel.

  So in short, how can I remove this column of the table in a loop for?

  Here's a picture of something ive been trying.

  Or is there an easier way to call from the front channels, im all ears.

  Thank you

  
  

• Select the dynamic channel to fill in the legend

  Hello no,.

  I am the acquisition of 16 channels each channel has their own name, when I double click on the graph, the populous select.vi channel and it will list the name of the channel. If I select the first channel 5 or last name 5 channels or channel. the selected channel must be complete on behalf of legend.

  I am facing the problem, when I select the way to any list of channels his does not display does not name, the same method that I did with labview 7.1, which has been working well.

  Please find this attachment, my code

  Hello

  Find error or anything just a blank field name while doing this operation.

  A point I can see here is:

  1. the table "name out" which bears the names of channel should have clues covered by array index.  If the index covered by index out is not in the name of then an empty string will be returned.

  Please check if this condition is met.

• The Alpha channel is recognized in a motion Menu?

  I am trying to use a video from Digital Juice as my animated menu background, but the alpha channel is not recognized.  It shows the black color instead of transparency.  I am compiling in the form of Quicktime with Alpha movie.

  Any help would be greatly appreciated.

  Thank you.

  Dave

  Lol you can use a background of movement or the background in the Menu of Photoshop, you can't use both. If you use a background of movement, the Photoshop Menu background is replaced by the video motion, and the buttons are rendered above it.

• subtracting the alpha channel

  Then I converted a selection to an alpha channel, and now I want to subtract from the areas of the mask. I use a white brush value, and nothing happens when I paint on the mask. If I change the color to black I can add to the mask so I don't know why I can't subtract.

  I use the latest version of the CC of the PS.

  Thank you in advance.

  Hi DNB224,

  Grasp at straws here. You may not have accidentally loaded selection? It can be very difficult to see the moving dotted line when you're looking at the alpha layer in the document window, and not at all if at any time you hid, and then I forgot to the unhide.