4/17/2024 0 Comments 3d coat make alpha channel![]() All of the selection methods, no matter how easy or advanced, have their goods and bads, so choose carefully. More EASY ways to select stuff: In a situation like the one above, it might be best use other methods of selection. When you save your image, you should save in the native Photoshop format (.psd) to preserve the alpha channel, and any other saved selections you might have. ![]() Click on the RGB Channel, and you're image will pop back up again. Now all you have to do is click your paint bucket tool and fill the selection with white, or go to Edit>Fill and select white, 100% opacity. Your image will also turn black, by default, but you'll still see your selection marquee. This creates a new channel, called "Alpha 1" by default. Open your Channels Palette (found under Window>Show Channels, if it's not already open) and click on the "New Channel" Icon. Click "OK" when you're ready and you'll see the selection on your piece, just waiting to be saved. Adjust this until only the background, but as much of the background as possible, shows up as 'white' in the preview window. C: Adjust the fuzziness slider to widen or narrow the selection set. A: Use this tool, similar looking to the standard eyedropper to sample the color you want to select. This will allow you to select all the pixels of a certain color range in your piece. There's always an easy way out, and this is it: Go to Select > Color Range *The reason my background color is not drastically different is because of two reasons: 1: I'm no fun and used a Targa file format to skip all this (this is an offshoot of the Post tutorial) 2: I'm a stupidhead. The background in this picture is all the lightlightlight blue. In the case of an Alpha Channel, we want to select the background so that we can separate it from the rest of the image, and easily manipulate it at any time. First things first, you need to decide what you need to select, and what you're going to do with it. The "hot magenta" or "green screen" colors work well.* Render out your 3d piece to a bitmap format, preferably not a targa file (.tga) so you're not cheating, since usually targas will prompt you if you want an alpha channel, and that takes all the fun away. Set your background color as something drastically different from any color in your image, if possible. Here's the image we're going to use:īefore doing the tutorial: In your 3d program. This tutorial will explain a few different selection techniques while creating an alpha channel. psd) naturally may incorporate an alpha channel, or the ability to save an alpha channel into their compression, but it's always good to know how to create one yourself. In truth, if you can't select something to manipulate, then how do you expect to manipulate it? Alpha Channels are saved selections within Photoshop, classically used to separate a background from a foreground. Creating an Alpha Channel and other Basic Selection Tricks A teacher once told me, Photoshop's real strength is not in any of it's editing tools, but rather in it's robust selection engine.
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