![]() Its value can be represented as a real value, a percentage, or an integer: full transparency is 0.0, 0% or 0, whereas full opacity is 1.0, 100% or 255, respectively. The alpha channel controls the transparency or opacity of a color. It is used to determine how a pixel is rendered when blended with another. 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). ![]() If you are interested in a detailed definition of a what is an alpha channel I got one from below: My simple definition of alpha channel, a colored image has 3 standard channels red,green,blue, the 4th channel is the alpha which allows you to control the opacity or transparency.
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