What is Alpha Channel?

The alpha channel is a shade issue that represents the diploma of Transparency (or opacity) of a colour (i.E., the red, green and blue channels). It is used to determine how a Pixel is rendered when blended with every other.

What Does Alpha Channel Mean?

The alpha channel controls the transparency or opacity of a color. Its price can be represented as a actual fee, a percentage, or an Integer: complete transparency is 0.0, 0% or 0, whereas complete opacity is 1.0, 100% or 255, respectively.

When a color (source) is blended with any other coloration (historical past), e.G., when an photo is overlaid onto some other image, the Alpha Value of the supply color is used to determine the resulting color. If the alpha value is opaque, the source color overwrites the vacation spot coloration; if transparent, the supply shade is invisible, permitting the backGround coloration to expose via. If the cost is in among, the resulting coloration has a varying diploma of transparency/opacity, which creates a translucent effect.

The alpha channel is used typically in alpha blending and alpha compositing.