Zigzag scan of quantized DCT coefficient matrix. This gives an efficient run length coding (RLC)
Windows based compressed (archive) file. Can contain one or many
files as well as a directory structure. On the Internet, large
graphics and programs are
usually compressed into ZIP files and then made available for
download. After you download this file you need to use a decompression
software program to "unzip" the file.
Common term to describe errors
in digital pictures, which appear as random black or white dots.
1. The effect of a camera lens changing focal length, and so making the image larger or smaller. 2. The same effect simulated by a telecine or DVE
A lens with a variable focal length. Zoom lenses enable an operator to change magnification and angle of view without moving the camera or changing lenses.