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Digital Video and HD
book

Digital Video and HD

by Charles Poynton
January 2003
Intermediate to advanced content levelIntermediate to advanced
736 pages
30h 54m
English
Morgan Kaufmann
Content preview from Digital Video and HD
Figure 38.12
Compression
ratio control in JPEG
is
effected by altering the
quantizer matrix: The larger
the entries in the quantizer
matrix, the higher the
compression ratio. The
higher the compression ratio,
the higher the reconstruc-
tion error. At some point,
compression artifacts will
become visible.
J PEG performance is loosely characterized by the error
between the original image data and the reconstructed
data. Metric such as mean-squared error (MSE) are used
to objectify this measure; however, MSE (and other
engineering and mathematical measures) don't neces-
sarily correlate well with subjective performance. ...
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Publisher Resources

ISBN: 9781558607927