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alpha channel
(redirected from Alpha compositing)

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alpha channel

In 24-bit colour, a channel for controlling colour information. Describing colour for a computer display requires three channels of information per pixel, one for each of the primary colours of light: red, blue, and green. A 24-bit graphics adapter with a 32-bit bus can use the remaining 8 bits to send control information for the remaining 24 bits.



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The breakthrough performance of the TARGA HD allows multi-channel video capture/playback and compression, sophisticated multi-layer alpha compositing with multiple luma/chroma keys, graphic overlays and broadcast DVEs all supported concurrently and in real-time.
Truevision Announces TARGA HD Architecture for Advanced Television by Business Wire
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