Image Processing Reference
In-Depth Information
MPEG-4 Part 2
The original video standard for MPEG-4 was referred to as
MPEG-4 visual. While the compression is not as efficient as Part
10 of the MPEG-4 standard, there are some interesting features
that Part 2 offers for multimedia applications. These additional
features may be added to a later version of the MPEG-4 Part 10
standard. This codec is not recommended for use in new
MPEG-4 part 10
A codec that has been developed jointly by the ISO/MPEG and
ITU-T/VCEG working groups. Currently equivalent to H.264.
The metadata standard. This describes the content that is stored
in MPEG-4 essence packages.
The rights-control systems of the future will be built around
MPEG-21 standards. These describe how MPEG-4 content is
allowed to be accessed and will use MPEG-7 metadata as part of
the process.
MPEG Industry Forum. This was previously known as the
MPEG-4 Industry Forum.
On digital terrestrial TV (DTT) and digital audio broadcasting
(DAB), the transport streams are delivered in a multiplex that
corresponds to one tunable channel on the broadcasting
medium. The receiver can then extract a transport stream
(another name for a multiplex) and dismantle it to retrieve the
individual channels.
National Association of Broadcasters.
Another way of describing modem-based dialup connections as
opposed to ADSL broadband connections.
Node (1)
One item within a tree-structured collection of objects either in a
file or in memory.
Node (2)
A single computer on a network.
National Television Standards Committee.
Harry Nyquist postulated the rule that sampling must take
place at twice the maximum frequency that you require to be
recorded. Subsequent research suggests that higher sample rates
are necessary to fully recover the shape of the wave form
at that frequency, since the Nyquist rule only recovers a square
wave at the maximum frequency. Many ideas that we take for
granted in telecoms and digital media stem from work that
Harry Nyquist did in the early 20th century, long before TV was
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