- Straight versus premultiplied
If an alpha channel is used in an image, there are two common representations that are available: straight (unassociated) alpha and premultiplied (associated) alpha.
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RGBA color model - Wikipedia
RGBA stands for red green blue alpha. While it is sometimes described as a color space, it is actually a three-channel RGB color model supplemented with a fourth alpha channel.
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Alpha channel - Wikipedia
Wikidata item Appearance move to sidebarhide From Wikipedia, the free encyclopedia Redirect page Redirect to: Alpha compositing
alpha channel - Wiktionary, the free dictionary
Apr 14, 2024 · alpha channel (plural alpha channels) (computer graphics) A numerical value specifying a level of translucency to be applied to a colour.
The History of the Alpha Channel - Photofocus
The Alpha Channel is the technology behind transparency in computer graphics. It first evolved in the late 1970’s at the New York Institute of Technology and continued to be refined at both Lucasfilm and Pixar.
What is an Alpha Channel? - Ask Tim Grey
Nov 27, 2017 · Tim’s Quick Answer: An alpha channel is essentially any channel other than the channels that define color values for pixels in an image. Generally an alpha channel is used to …
alpha channel
The fourth RGBA information channel that contains 8-bit grayscale values used in compositing. It was co-developed by Ed Catmull and Alvy Ray Smith at the New York Institute of Technology …
What is an Alpha Channel? - David Bittorf School
Feb 24, 2023 · An alpha channel is a grayscale image that represents the transparency of an object or image. It is a crucial component in computer graphics because it allows designers to create complex and realistic effects, …
Alpha compositing - Wikipedia, the free encyclopedia - Zubiaga
With the existence of an alpha channel, it is possible to express compositing image operations, using a compositing algebra. For example, given two image elements A and B, the most …
alpha channel - Computer Architecture
The alpha channel is essentially a grayscale image associated with the color channels (R, G, B) of an image. Each pixel in the alpha channel ranges from 0 to 255, representing complete …
Alpha Channel - Motion Graphics Glossary
What is an alpha channel and how does it enable transparency in motion graphics? The Alpha Channel is a component of digital images that allows designers to specify the opacity of individual pixels.
What is alpha channel? - Computer Notes
An alpha channel enables special effects such as blurring or tinting of the background as a transparent object passes across it, and fog or mist effects to suggest distance. Alpha blending …
The Alpha Channel - Linearity blog
Jun 13, 2022 · Learn about the basic properties and definitions of the Alpha Channel. It's time to understand and use this powerful graphic design feature once and for all.
alpha channel - Wikiwand
Oct 5, 2024 · That is, when compositing image A atop image B, the value of {\displaystyle \alpha } in the formula is A's alpha channel.
What is Alpha Channel? | Webopedia
May 24, 2021 · In graphics, the alpha channel is a mask that specifies how a pixel's colors should be merged with another pixel when the two are overlaid.
Alpha Channel - Media College
An alpha channel is a special channel in the image used for transparency. It can be thought of as a mask, matte or stencil. Its purpose is to define the areas of an image which can be …
The History of Alpha Channels - Richard Harrington
Jan 6, 2012 · Alpha channels grew out of work done at the New York Institute of Technology in 1977. The goal was to embed transparency data directly into each file to cut down on …
What is Alpha Channel? - Definition from Amazing Algorithms
An alpha channel is an additional channel added to a color image or video to represent transparency information. It allows precise control over the opacity of each pixel, enabling the …
What is an Alpha Channel? - ActionVFX
Apr 11, 2022 · In this article, we explain what the alpha channel is, why it does not simply equal transparency, and how different types of alpha channels work.
What is Alpha channel? - Definition from Amazing Algorithms
An alpha channel is a grayscale mask that controls the level of transparency of an image or video layer, allowing for the creation of semi-transparent and composite effects. It specifies the …
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