Definitions for "Alpha Channel"
A way of defining transparency for each pixel in an image, with the possibility of creating gradient transparency effects. Typically, an alpha channel is defined from a grayscale image where the black pixels are completely opaque, white pixels are completely transparent, and levels of gray create a percentage of opacity.
a separate layer, or map, embedded within a raster image file format, used to carry additional information per pixel; often used for transparency information
Amount of memory of the frame buffer (usually 8 bits) for each pixel which shows the transparency level in comparison to the pixel below. In an image at 32 bits, 24 bits are destined to the colour information while the remaining are for alpha channel.
Keywords:  altavista, alt, text
alt text AltaVista
Keywords:  frisket, version, electronic
an electronic version of frisket