Photoshop :: Way To Select Matching Pixels On 2 Different Layers?
Jul 10, 2013
If I shoot 2 different portraits (of 2 different people), against the same background (a complex one not a backdrop), using a locked frame on a tripod, giving me the same exact background in both pictures, with only the portraits changing.
If I then take these 2 pictures, and create layers out of them in the same Photoshop document, and align them perfectly on top of each other.
Is there a way (action, plugin, script, etc...) to select the pixels that did not change between the 2 layers? In other words, the pixels that create the background of both pictures? And would it make it easier if I shoot the background alone, and then the portraits, and then follow the same steps?
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Mar 9, 2014
I have a photo open in Expert with a blank layer above it. I selected the quick selection tool and drew a complete circle around the object I want to copy from this photo and to paste the selected area to the layer. However, I get a pop up box stating that the copy command cannot be completed because no pixels we selected.
I followed book and online instructions on selection tool uses while in Layers and can't seem to get past this pop up box.
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Nov 6, 2006
I have a layer with a picture that has some white in it,
A second layer that's half on top of the first layer and the other half does not have anything in the back. This layer also has 80% opacity and the color is just what I want.
How can I match the color from the second half to the one that has a white background?
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Feb 26, 2006
I have a portrait shot on a grey cloth background and I need to remove the grey background.
Replace color is useless, as is the magic wand.
However the BG is comprised of pixels that are all VERY close to neutral ie
Red -231
Green - 232
Blue - 231
etc
I am trying to find a way to select only those pixels that are within 1 or 2 from the other components, ie it would select for the above selection:
Red - 230-232
Green - 231-233
Blue - 230-232
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May 1, 2013
In some CS6 PSD documents (but not all), when I Select All (no feather) and then Copy, the result in the clipboard is one pixel smaller in height than the original—the bottom row is missing. This is verified by pasting, selecting the layer's contents, and reading the Info window, or by starting a new document which defaults to the clipboard image's size. One pixel too small. In addition, when I paste on top of the original (which usually my intention) you can see everything shift up by one pixel. (Showing that the image has been cropped at the bottom, rather than scaled.)
I am viewing everything at 100%.
Any guideline as to when this bug does or does not happen? I can't find a pattern--maybe it's any Copy that can fail and not just Select All? It seems like it may happen on a previously-scaled document (which I know messes up the text tool semi-permanently). But I hate having to go through the extra step of double-checking the dimensions of every single copy and paste. I'm really trying to get somewhere near my old CS3 productivity, but it's a struggle with all the new bugs!
(This is different from the bug where rectanbgular selections loose one pixel of vertical when you release the mouse button at 100% zoom, although it does sound related. That longstanding bug happens 100% of the time, but at least you can see in the Info box that it has happened—one more constant act of double-checking that PS6 work seems to need. Whereas in this bug, the Info window shows the correct full size of the document after you Select All—but when you Copy, the result has lost data.)
I see now that in the same document, something similar also happens when I simply flatten the document: a single-pixel row turns white... but at the top.
Flattened/background layers seem to be immune from the copy/paste height loss, so I thought I'd just flatten the image I want to copy... but the flatten itself loses data.
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Jul 25, 2011
The 'application' I am trying to make currently adds entites to a drawing. Each entity has data associated with it but also part of a tree of infomation so I store xrecord data along with the objectID in a dictionary tree within the drawing.
I want to be able to select multiple entities and have any matching data shown in a palette. The same way the properties palette behaves.
I have it working but I can see AutoCAD crunching the data. It cycles through the selection set and the dictionary tree extracting entity data until it finds an ID match in the xrecord.
How the properties palette works so quickly or how I could improve the speed.
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Jun 18, 2012
How can I select ALL non-transparent pixels from a layer?
- Ctrl + click doesn't work (it seems to have a 50% tolerance - my opacity 7% and 40% pixels don't get selected);
- The magic wand tool with 0% tolerance does work (when I click on a transparent pixel it selects ALL opacity 0% pixels around it and then I just have to inverse selection), BUT my image has a lot of holes with transparent areas and selecting them one by one would be tedious.
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Jul 3, 2012
I have been using CS6 for a while now and one problem that I keep encountering is the auto-selection of shape layers. Trying to auto-select a layer that's within 10 pixels of a shape layer is impossible without having to zoom in. This is a little hard to explain without images... Cue image...
If you try to recreate the above image, where the black 20x20px rectangle is a shape and the red 38x38px rounded rectangle is rasterized pixels, you will see that auto-selecting the red rounded rectangle is impossible at 100%.
Is this intentional and just an issue for me? Selecting pixel layers in CS5 was never this annoying. It seems that shape layers have an invisible 10px area around them stopping you from selecting anything below them. This is so frustrating with pixel UI work.
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Aug 3, 2012
Using Photoshop CS5 for the PC.
When I select a layer and look at the info panel, I see that the layer height and width is shown apparently by default in percentages. Specifically 100% Height and 100% Width.
I would prefer that the Info panel show height and width in Pixels instead of Percentages. Finally, after seeing the height and width in Pixels I want to change the height by entering the height in pixels. How can I do that?
I don't want to use a "ruler" to do this, I just want to be able to enter the pixels (height and width) that I want the layer to b resized. For example when selecting a rectangle that is currently 100 pixels tall and 50 pixels wide, I want to be able to just change 50 pixels wide by entering (in a field) 25 to make it 25 pixels wide.
In Fireworks I resize by pixels all the time. But can't find a similar method in Photoshop.
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Mar 24, 2013
I've managed to pixelate an image down to 128x128 pixels and have the amount of colours to 64.
However, I'm trying to get it that when I select a coloured pixel that all the other pixels of that colour are highlighted.
The magic wand seems to be the sort of tool I need but it highlights all colours/pixels that are similar; I want all pixels that have the exact RGB as the pixel selected.
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Mar 28, 2012
I was using Paint.net but I've found it too limited. The GIMP has much more power and I can do a lot more with it, but I've found a few things I can't figure out how to do.
For example, when I use the Eyedropper tool () to choose a color, GIMP doesn't seem to include any transparency in the selection:
The Colorpicker just chooses the color at 100% opacity. Is there any way to change this so that my new foreground color includes the transparency level?
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Apr 29, 2006
when i select diffrent layers,the layer's name in toolbar does not change, i can not change the layer, color,and other settings.my autocad version is 2006 and 2007.
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Sep 12, 2013
The entire image is what is blinking, while the photoshop tools remain on.
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Nov 5, 2012
I have a client who has a set of .ai files they need resized to meet various epub layout specs. Apple and Kindle both are different sizes so I need to know the best way to resize an .ai file 11.25 x 5.65 inches into a smaller dimension in pixels while retaining the layers.
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Mar 21, 2013
I have a bunch of layers, WITHOUT holding down control and clicking each one, one by one, is there a button or shortcut to just auto highlight all the layers, Im trying to move them around evenly together on the canvase at once.
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Mar 1, 2008
I am using the 30 day trial version of CS3 before I buy. I have been using Elements for years.
I have a PSD file that was sent to me. In elements I can click on any item in the file and move, delete etc.
But in CS3 I can not do that. I have to go to layers and find the layer I am looking for, click on it in the layer list and then I can go to the image and manipulate it.
Is this just the way it works in CS3 or do I need to flip a switch somewhere.
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Apr 4, 2013
1. I can no longer nudge grouped layers. Photoshop complains that it cannot nudge layers in a group.
2. When I try to move a layer selected in the layer panel (or selected via ctrl-alt-right click), a click on the layer selects the layer effect above instead.It seems like there is some kind of click through enabled. If I click on a transparent part of the layer, the layer below get selected instead.
My first thought was that this had something to do with "Auto-select layer/group", but it's disabled. how can I go back to normal mode, so I can click anywhere in a layer, transparent or not, and move the items in it etc?(I'm using Photoshop CS6.)
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Jul 22, 2013
Beginner question: When I try to select a layer in my layers palette, I am unable to. Nothing happens.
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Mar 16, 2011
All of a sudden, I cant use the CTRL+CLICK to select Multiple Layers. When I do, I get this little box at the point of the cursor and ""Load Selection" pops up in the History.
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Sep 5, 2004
for the life of me i can never remember how to apply a simple gradient to a single layer. the gradient i apply always alters with the rest of the image. i ctrl+click on the layer, and then try the same on the mask (if there is one)....
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Jan 16, 2008
I have version 6.0, and for some reason, something changed the other day where I can no longer simply click on the layer and move it around. I now have to right click and select "layer 17" before being able to move it. I can't seem to find how to edit this setting.
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Dec 8, 2008
In Photoshop CS3... I have several items on their own layer. Is there away to select these items without having to find their specific layer.
Is there a tool to select the items I want on my page, thus Photoshop automatically selects their associated layer?
I would like to select more then one item at a time, but their all on separate layers.
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Feb 11, 2005
I have a PSD with about 100 layers. When I use the select tool and press while holding CTRL (to activate "auto select layer") I sometimes select invisible layers.
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Sep 27, 2005
way of merging all the layers at once together in a photoshop application, but i do not know how to merge only ditinct ones that i want to. Is there anyway how, and if there is, a shortcut would be greatly oblidged.
Version: Adobe Photoshop CS 8.0
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Sep 12, 2005
If I am constantly making frames in photoshop for use in the video world (ie. They will be on TV) the pixels need to be rectangular (or 4x3) in aspect and not square.
I know in programs like After Effects and Combustion you can set when saving an image whether or not it is square or rectangular pixels.
How do I do this in Photoshop if it can be done?
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Oct 2, 2012
This has baffled me that photoshop does not do this. But why can't I not ctrl+click on a layer and get to the layers underneath that layer? No matter how many times I ctrl+click the layer to select it, it just selects the same topmost layer.
It is interupting my workflow majorly and it is really frustrating when using a lot of texture overlays to have to hide them and then ctrl+click to find where the layer is that I want to work on. Right clicking on my document just brings up all layers in my document no matter where my mouse is.
This is what shows when I right click: [URL]....
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Nov 12, 2012
if there is a plugin or a way to select all the invisible layers from a photoshop file autmatically with just one click?This would be really handy when it comes to huge photoshop files with lots of folders & layers...
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Feb 23, 2012
I'm practicing on photoshop cs5 and I'm working on picture and trying to change things in it but when it came to select auto-align layers from the edit menu it's not lighting to select it i, i can see it but can't select it.
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Oct 1, 2012
I am running CS2 and used to do this using the "shift" key. It doesn't work any more.
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Jun 18, 2013
I use auto-select primarily when designing. I will often clicking and dragging a marquee box to select multiple objects. I immediately noticed that it is now selecting hidden layers as well, where it didn't before.
Is there a setting or way to change this? I am assuming as of now that this is a new change. They will still select even if the layers are locked so locking groups is not a solution for this.
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Apr 30, 2012
I', using CS4 on Windows 7. I'm making a 24x36 poster with lots of images on it. Each image is it's own layer. Some of the images are too big and I need to make them smaller.
Instead of just using Control+T and holding shift to make them smaller, I'd like to be able to specify in inches what the resized image should be (like 5" wide for example). Is there a way to do this? I see the % boxes, is there something similar for inches? I can't figure it out. I've got Options turned on under Windows.
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