It will gives the exact definition about the Dvi,Fractal Image,Sub Band Image ,Video Coding and Wavelet Based Compression. It also includes the clear image.

1. M.SUJITHA,
II-M.SC(CS&IT),
Nadar Saraswathi College Of Arts And Science,
Theni

2.  DVI was designed to transfer digital data from computers to
display device such as LCD monitors or projectors.
 DVI or computer hardware doesn't support such data.
 An adapter is used to combine the DVI data with digital or
analog audio.
 Digital video interactive (DVI) technology, a digital presentation
technology
 That manages anything from text to full-motion video.
 The potential of expanding the usefulness of personal
computers, while rendering them less intimidating.
 The components of DVI, the additional hardware and software
needed to develop applications for this medium
 The uses of the medium by reviewing some DVI applications
under development.

4.  Fractal is a lossy compression method for
digital images, based on fractals.
 It is a storage and decompression chip
using fractal transform image compression technolo
gy.
 To date the most successful use of still fractal
image compression is by Microsoft in its
Encarta multimedia encyclopedia.

6.  The integration of video into the computing environment
involves many concerns.
 Including communications hardware and software protocols,
storage systems, user interface design, authoring tools.
 The methods to index and browse vast information resources.
 Important though they are, it is video compression that resides
at the center of this chain.
 The concerns of video compression are likewise diverse and
include: image quality, bandwidth adaptation, playback
performance, memory consumption, coding symmetry,

7.  In signal processing, sub-band coding (SBC) is any form
of transform coding .
 That breaks a signal into a number of different frequency
bands.
 Typically by using a fast Fourier transform, and encodes
each one independently.
 This decomposition is often the first step in data
compression for audio and video signals.

9.  The simplest way to digitally encode audio signals is pulse-
code modulation (PCM).
 Which is used on audio CDs, DAT recordings, and so on.
 Digitization transforms continuous signals into discrete ones
by sampling a signal's amplitude at uniform intervals
 Rounding to the nearest value representable with the
available number of bits.
 This process is fundamentally inexact, and involves two
errors:
 discretization error, from sampling at intervals,
 quantization error, from rounding

10.  To enable higher quality compression, one may use subband
coding.
 First, a digital filter bank divides the input signal spectrum
into some number (e.g., 32) of subbands.
 The psychoacoustic model looks at the energy in each of these
subbands.
 Each of the subband samples is quantized and encoded so as to
keep the quantization noise below the dynamically computed
masking threshold.
 The final step is to format all these quantized samples into
groups of data called frames, to facilitate eventual playback by
a decoder.


11.  Digital video communication is a rapidly developing
field.
 Especially with the progress made in video
coding techniques.
 This progress has led to a high number
of video applications such as,
 High-Definition Television (HDTV),
videoconferencing and real-time video transmission
over multimedia.

14.  These image compression techniques are basically
classified into,
 Lossy lossless compression
 compression using wavelet transforms results in an
improved compression ratio as well as image
quality.
 Wavelet transform is the only method that provides
both spatial and frequency domain information.