Alpha blending - definitie. Wat is Alpha blending
Diclib.com
Online Woordenboek

Wat (wie) is Alpha blending - definitie

OPERATION IN COMPUTER GRAPHICS
Alpha channel; Alpha blending; Alpha transparency; Alpha-blending; Alpha channels; Alpha composition; Porter-Duff; Alpha Blend; Alpha Blending; Alpha Channel; Premultiplied alpha; Matte channel; Alpha-channel; Alpha matte; Alphamap; Porter duff; Alpha Transparency; Alpha blend compositing
  • Alpha blending, not taking into account gamma correction.
  • Alpha blending, taking<br> into account gamma correction.

Alpha compositing         

In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. It is often useful to render picture elements (pixels) in separate passes or layers and then combine the resulting 2D images into a single, final image called the composite. Compositing is used extensively in film when combining computer-rendered image elements with live footage. Alpha blending is also used in 2D computer graphics to put rasterized foreground elements over a background.

In order to combine the picture elements of the images correctly, it is necessary to keep an associated matte for each element in addition to its color. This matte layer contains the coverage information—the shape of the geometry being drawn—making it possible to distinguish between parts of the image where something was drawn and parts that are empty.

Although the most basic operation of combining two images is to put one over the other, there are many operations, or blend modes, that are used.

Blending         
WIKIMEDIA DISAMBIGUATION PAGE
Blending (disambiguation)
·noun The act of Mingling.
II. Blending ·p.pr. & ·vb.n. of Blend.
III. Blending ·noun The method of laying on different tints so that they may mingle together while wet, and shade into each other insensibly.
Tortillon         
  • A tortillon being used to blend
CYLINDRICAL DRAWING TOOL TO SMUDGE OR BLEND
Tortillion; Blending stump; Blending-stump; Tortillian; Blending stick
A tortillon (; also blending stump) is a cylindrical drawing tool, tapered at the end and usually made of rolled paper, used by artists to smudge or blend marks made with charcoal, Conté crayon, pencil or other drawing utensils.

Wikipedia

Alpha compositing

In computer graphics, alpha compositing or alpha blending is the process of combining one image with a background to create the appearance of partial or full transparency. It is often useful to render picture elements (pixels) in separate passes or layers and then combine the resulting 2D images into a single, final image called the composite. Compositing is used extensively in film when combining computer-rendered image elements with live footage. Alpha blending is also used in 2D computer graphics to put rasterized foreground elements over a background.

In order to combine the picture elements of the images correctly, it is necessary to keep an associated matte for each element in addition to its color. This matte layer contains the coverage information—the shape of the geometry being drawn—making it possible to distinguish between parts of the image where something was drawn and parts that are empty.

Although the most basic operation of combining two images is to put one over the other, there are many operations, or blend modes, that are used.