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44

To expand on utopicam's answer, sometimes your image might contain areas, such as shadows, that you'd want to be semitransparent. For example, let's say you have a photo shot in a lightbox, such as this nice and freely licensed picture of a Swedish wooden toy horse courtesy of Creative Tools: In general, the first step would be to adjust the levels of ...


17

You don't see the transparency effect if there's nothing below the layer because there's nothing there for Photoshop to calculate (all these blend modes involve calculations based on the values of the corresponding pixels on each layer), so it just shows you the image. In this particular case (as Farray pointed out while I was writing this!), you can pull ...


15

The main trick, in my experience, to adding smooth transparency to an image in GIMP is using the Layer → Transparency → Color to Alpha... tool. Of course, you have to know how to use it to good effect — on its own, all it does is make your images look all funny and translucent. If I take the image you posted above, and just run Color to ...


15

GIMP's Color to Alpha tool is very handy if you know how to use it, and this task seems particularly well suited for it: Open the image in GIMP, and change it to RGB color mode if necessary. Select Layer → Transparency → Color to Alpha... Select black (#000000) as the color to make transparent. Click "OK". Save the resulting image in PNG format: ...


12

How about a light box? They are cubes made of some sort of semi-translucent fabric that diffuses the light. You can probably find something like that in your local photography equipment store. Here is one: http://www.ezcube.com/ I made my own, though, out of cardboard and velum paper. And I used plain 100W lights instead of professional ones. Here is a ...


8

I'm not sure why you're rasterizing the layers, nor why you would want to copy and paste rather than place the image in AI. If there isn't a vital reason for that workflow, Place the PSD in Illustrator (File > Place) instead. All of the transparency is preserved, layers are intact. Once the image is placed, you can embed it if necessary. One of the embed ...


8

There is a very fast and efficient method to remove single pixel noise from a transparent background shown in this example picture: Use the fuzzy select tool to select the fully transparent background with following settings: Select Antialiasing Select Feather Edges Adjust feather radius to include the size of all noize pixels. Tick Select transparent ...


7

This is something I was looking for as well. The code was almost identical to the sample code of the CodeLab Tutorial Part 1 - Simple plugins walkthrough. So after a couple minutes, there is now a simple plugin to do this job right from Paint.NET. https://dl.dropboxusercontent.com/u/90776664/Paint.NET/AlphaColor.dll


7

When assigning white as alpha channel for transparency we will not be able to have opaque highlights, as these per definition will be white, hence fully transparent. To have an alpha channel sparing both highlighted white areas, and black shadows we better choose a grey color for assigning alpha. To show the effect more clearly I first made your original ...


7

For this, you best create separate channels for the shadows and highlights. The shadows can be directly taken from the white T-Shirt, and be used as a multiplicator (0-100%) for the shirt's color (layer mode: multiply) As for the highlights, this really depends on the material. Cloth doesn't reflect much light on the surface, so most of its color comes ...


7

I have had some luck "hacking Ikea" for similar projects. For greenscreen-effects, they even have bright green tables :D. This is but one alternative, and you find instructions here, at IkeaHackers With the use of two hampers, this is the result: But here is the real crux: succeeding with this, lighting is alpha and omega. You will need at least three ...


6

I completely understand your pain. Here is my solution :) Extract Alpha as Mask Action Here is what it does: Edit: I hope this helps :)


6

I assume you mean something along the lines of this: Where the background is solid, and the text appears to be an image. This is fairly simple to set up. Place the color layer at the bottom of the layer stack, then the text layer, then the image you want to use as the top layer. Hold down the Option/Alt key and click the line between the image layer ...


6

The way transparency works with 8-bit gifs/pngs is that a pixel is either fully transparent or fully opaque. On the corners of a circle where the circle blends transparently to the background, there are usually pixels that are semi-transparent to smoothen the transition. This smooth transition can not fully be reproduced with 8-bit gifs/pngs. One way of ...


6

I know you said you're not comfortable with command line tools, but ImageMagick can do this: Replace a Specific Color convert balloon.gif -transparent blue balloon_trans.gif Where balloon.gif is the source image, -transparent specifies that you want a transparent bg, blue is the color you want to replace, and balloon_trans.gif is the ...


6

One method is to use the original image/layer as its own layer mask. You'd create a duplicate of the layer, desaturate and invert it, pasting the greyscale result into the original layers layermask. Update: Here are some step by step instructions: Start with your flattened image: Add a Saturation/Hue adjustment layer and turn down the Saturation until ...


5

Ok - I created a simple pixelBender filter that can be used with the photoshop PixelBender plugin (http://labs.adobe.com/downloads/pixelbenderplugin.html) to remove the transparency for a layer. here it is: http://neo.cycovery.com/removeTransparency.pbk


5

Wrong! All Wrong! I fooled myself, and you as well in the process: What I created is indeed a premultiplied image - not premultiplied with black but with white. I leave this answer up for others to build upon it. I managed to do it like this: Extract true R-G-B-A channels from image Use them to build new image And here's how I did it: This is ...


5

Greenfish Icon Editor Pro has this functionality out of the box. It is a function called "Remove Matte", where you just specify the color component you want to be replaced with transparency. In your case black. This is the result: Greenfish Icon Editor Pro is totally free of charge. It is by far the best free icon editor I have ever tried. From the ...


5

Create a group Place all applicable layers in the group Apply a layer mask Paint the layer mask - the darker it is the more transparent. So black is 100% transparent, white is 100% opaque and everything in between is a gradient of that such as 50% Black being 50% transparent.


5

That happens with Transparent .GIF and Transparent .PNG files. What you need to do is actually save the .PNG file to your computer somewhere by right-clicking and choosing 'Save As' and then open it in Photoshop instead. Doing it this way will generally preserve the transparency. I've never found an explanation as to why it works this way but if you copy ...


4

And just to be complete, here is the GIMP answer. Just do: Colors > Color to Alpha ... select Black Click OK if "Color to Alpha ..." is greyed out you need to set the Image mode to something else than indexed, e.g.: Image > Mode > RGB


4

This case is more or less simple (you're dealing with black and white). After applying the color (#a1a2a4), check the RGB levels: You can see it has approximately 162 (average), and knowing that it can go from 0 to 255, you just need to find out the percent: 162 * 100 / 255 = ~63,5% Now, because RGB works in the opposite way compared to CMYK (in terms ...


4

This will require a little experimentation. As with most things in Photoshop, there are multiple ways to get there. Method 1: Eyedropper a solid part of the red cloud to make it the foreground color. Choose Select > Color Range. Set your Selection Preview to "Grayscale" and the preview thumbnail to "Image" so you can see what you're doing. Uncheck ...


4

I would probably leave the button transparent, but add a layer below it with the desired (or solid black with a blend option of color overlay), place the two layers in a group, and then add a layer mask (the same shape as the button) to the group. This way it is trivial to change the color of the button later by changing the color of the new layer I just ...


4

Sounds like you need to crop certain parts of the jpgs (the main figure, for example) and delete the "background". You can do so using the lasso tool. The gimp website has lots of tutorials and explanations. Check this http://docs.gimp.org/en/gimp-painting.html#gimp-concepts-selection and this out: http://docs.gimp.org/en/gimp-tool-free-select.html The ...


4

Yes, it's possible. Let me outline how it's done, using this image from Wikimedia Commons (by ed_g2s, licensed as CC-By-SA 3.0) as an example: Open the black and white background versions as layers of the same image (using Open as Layers... or just open both and copy-and-paste one into the other). Move the white layer above the black layer if it's not ...


4

Try This... File > Document Set Up Click each of the color boxes you see there in the Transparency section. There are 2. The color picker will pop up when you click the color box Set both boxes to the grey you want to use for the background. Click OK Now choose View > Show Transparency Grid from the menu. This will show you a grey background on the ...


4

If you have imagemagick installed (if you don't and are on a mac i'd recommend using homebrew) there is a super-easy way that will get you close... see this article here : http://www.imagemagick.org/Usage/compose/#changemask Basically from your two images you can call this command... convert original.png background.png -compose ChangeMask -composite ...



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