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Glossary
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8-bit grayscale
Used to represent black-and-white photos accurately. These grayscale
images contain 256 shades of gray.
24-bit color
Color images composed of three 8-bit color channels. When
combined, the red, green, and blue channels provide up to 16 million
colors. This is also referred to as true color.
256 Color (optimized palette)
The palette for an image which comprises the 240 most common
colors in the image plus the 16 basic colors.
256 Color (web palette)
A palette or color table containing red, green, and blue pixel colors that
are standard for images embedded in Web pages or .html files.
.bmp
The filename extension used for Windows bitmap images. See also
Windows bitmap.
.dib
Device Independent Bitmap. A common bitmap format for Windows
programs.
.fpx
The filename extension used for FlashPix files.
.gif
The filename extension for Graphics Interchange Format files.
.htm
The filename extension for HyperText Markup (HTML) files. This
extension also appears as .html.
.jpg
The filename extension for JPEG files.