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J
"Jaggies"
- Slang term for the stair-stepped appearance of a
curved or angled line in digital imaging. The smaller
the pixels, and the greater their number the less
apparent the "jaggies". Also known as pixelization.
JFIF
- A specific type of the JPG file format. Also known
as EXIF
JPEG
- Joint Photographic Experts Group - The name of the
committee that designed the standard image compression
algorithm. JPEG is designed for compressing either
full-colour or grey-scale digital images of "natural",
real-world scenes. It does not work so well on non-realistic
images, such as cartoons or line drawings. JPEG does
not handle compression of black-and-white (1 bit-per-pixel)
images or moving pictures. See "JPG" below.
JPEG2000
- The new JPEG compression standard that will be used
in digital cameras and software starting in 2002 (maybe?).
It will feature higher compression but with less image
quality loss.
JPG
- The most common type of compressed image file format
used in digicams. It is a "lossy" type of
storage because even in its highest quality mode there
is compression used to minimize its size.
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