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1answered Dec 15, 2021 at 23:18Short answer: Anything can be in the alpha channel. The name "A" or "alpha" doesn't really mean transparency, or anything else really, it's just the name that refers to the fourth channel of the image. So you can put anything in it, depends on what you want in it.
Long answer, if you want to understand it in more depth, is below.
Image channels are just a container with some data. You can have any number of channels, depending on what the format allows. For example, JPEG files can have three, PNG can have four. Some formats, like OpenEXR, which i...
Content Under CC-BY-SA license What Is the Alpha Channel in PNG Images? - MUO
The alpha channel is a special channel that handles transparency. When an image has an alpha channel on it, it means you can … See more
If you've ever added an alpha channel to a layer, you've probably wondered what exactly was going on behind the scenes. Now you know what an alpha channel is, why it's important, and how to preserve transparency when editing and saving an image. Both GIMP … See more
If you've ever downloaded an image with transparency then saved it as another file type, there's a good chance that the image somehow lost all of its see-through parts. Everything that was transparent turns white and opaque. This happens when you save a file with … See more
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Alpha compositing - Wikipedia
Although used for similar purposes, transparent colors and image masks do not permit the smooth blending of the superimposed image pixels with those of the background (only whole image pixels or whole background pixels allowed).
A similar effect can be achieved with a 1-bit alpha channel, as found in the 16-bit RGBA high color mode of the Truevision TGA image file format and related TARGA and AT-Vista/NU-Vista display …Wikipedia · Text under CC-BY-SA license- Estimated Reading Time: 8 mins
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What is Alpha Channel? - Definition from Techopedia
WEBJul 23, 2012 · The alpha channel is a color component that represents the degree of transparency (or opacity) of a color (i.e., the red, green and blue channels). It is used …
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Mastering Alpha Channels: A Complete Guide to Understanding …
WEBAug 18, 2023 · An alpha channel is an additional channel, often referred to as a matte or transparency channel, that is added to an image or video layer. It contains pixel …
What is an Alpha Channel? | ActionVFX
WEBApr 11, 2022 · A in RGBA stands for the alpha channel, which is an additional channel that stores the information about the opacity/transparency of every pixel. The term was first …
png - what's the difference between alpha channel and …
WEBJan 29, 2017 · Alpha channels can contain anything, while transparency is a specific channel relationship. And it says also, (Transparency channels) Each image pixel is …
Create A Transparent Background with Alpha Channels - Storyblocks
WEBLet’s start with the basics — an alpha channel is essentially a transparency map for your footage or image, meaning that you can have areas in your footage or image that have …
Alpha Channels in Photoshop: Guide To Mastering Transparency
WEBNov 25, 2023 · Alpha channels are essential for managing image transparency and complex selections in Photoshop. The flexibility of alpha channels allows for advanced …
RGB? CMYK? Alpha? What Are Image Channels and …
WEBFeb 2, 2011 · Here's the answer. The channels panel in Photoshop is one of the most disused and misunderstood parts of the program. But images have color channels with or without Photoshop. Read on to find out …
Alpha Channels - VIAS
WEBThe variable transparency allows one to create special effects that will look good on any background, whether light, dark, or patterned.
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