Alpha Channel

Alpha Channel

 

 

Alpha Channel

 

Meaning of Alpha Channel

Alpha Channel – The alpha channel is used to specify an alpha value for each color pixel. The alpha value is used to control the blending, on a pixel-by-pixel basis, of two images: new pixel = (alpha)(pixel A color) + 1 – (alpha)(pixel B color) Alpha typically has a normalized value of 0 to 1. In a computer environment, the alpha values can be stored in additional bit planes of framebuffer memory. When you hear about 32-bit frame buffers, what this really means is that there are 24 bits of color, 8 each for red, green, and blue, along with an 8-bit alpha channel. Also see Alpha Mix.

 

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Alpha Channel

 

Alpha Channel

 

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Alpha Channel

 

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Alpha Channel