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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
4.1 Sampling Using an Array of Points
87
Thus we see that the picture in Fig. 5 after it is sampled and reconstructed
can look like the picture in Fig. 7. Note that the original periodic pattern in
Fig. 5 appears at a different frequency and orientation in Fig. 7, hence the
name aliasing for this effect. The frequency w
0
w
1A
[(w
0
w
mn
) in a more
general case] is called the aliased spatial frequency. |
In the preceding discussion on aliasing, we examined a picture with a
pattern at a single spatial frequency vv
0
and it gave rise to a single aliased
frequency vv
0
—vv, ,. In practice, depending on the reciprocal vectors w
x
and
vv
2
and the regio ...
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Publisher Resources

ISBN: 9780323139915