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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 29.13 Spatial
frequency spectrum of
composite
NTSC includes
luma, which spreads from
[0, 0], color subcarrier at
[188,240], and modu-
lated chroma, which
spreads from [188, 240].
Figure 29.14 Spatial
frequency response of
NTSC "notch" filter
shows that a large portion
of the luma spectrum is
wrongly decoded as
chroma. In areas of fine
periodic luma detail,
cross-color artifacts such
as swirling color rain-
bows are liable to appear.
Figure 29.15 Spatial
frequency response of
NTSC comb filter
exhibits greatly improved
luma response, and
reduced cross-color arti-
facts, compared to
a "notch" filter.
if any- that has been ...
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Publisher Resources

ISBN: 9781558607927