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Digital Picture Processing, 2nd Edition
book

Digital Picture Processing, 2nd Edition

by Azriel Rosenfeld, Avinash C. Kak
January 2014
Intermediate to advanced content levelIntermediate to advanced
435 pages
18h 42m
English
Morgan Kaufmann
Content preview from Digital Picture Processing, 2nd Edition
8.5
Noise in Reconstructed Images
395
(d)
/
-1.000 -0.750 -0.500 -0.250 -0.000 0.2500 0.4999 0.7499
Fig. 23 (a) A 64 χ 64 display of the Shepp and Logan phantom, (b) Reconstruction of the
phantom from 120 projections and 101 rays in each projection, (c) The relative-uncertainty
image for the reconstruction in (b). (d) Graphical depiction of the relative-uncertainty values
through the horizontal middle line of (c).
relative
uncertainty at
(x,
y) = N
in
(Ji/
i
2
(
79
)
We
will now define a relative-uncertainty image as follows'ß
variance!
f(x, y)}
[exp{f(x,
y)}V
The
relative-uncertainty image becomes independent
of
the
number
of
inci-
dent
photon ...
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Publisher Resources

ISBN: 9780323139915