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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
7.4
Least Squares
Filtering: The
Discrete Case
287
where we have used Eq. (111a) from Chapter 2. If the noise process is ergodic
(Section 2.4.6), R
vv
(x, v) can be determined by applying Eq. (28) of Chapter 2
to a picture containing noise only, i.e., to an output picture g(x, y) obtained
when the input picturef(x, y) is zero.
If no statistical properties of the random processes involved are known, it
is not uncommon to approximate (41) by
H(u,v)\H(u,v)\
2
+ T
where Γ, the noise-to-signal power density ratio, is approximated by a suitable
constant. The value of this constant evidently reflects some a priori knowledge
about the relative magnitude ...
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Publisher Resources

ISBN: 9780323139915