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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
5.2 Fast Implementation of KL Compression
147
Using (66a), we find that the ith element of the vector [Φ]*5 is given by
J,
Hm>
Jn¥i
s,
°
wh
- * -
(
-
'Wl
si
"
ΝΤΊ <
108
»
where we have used (97). Substituting this and (66a) in (107), we get for the
rath element of] ~
l
b
2a ]L fl _ . . . ίπ ) . nin
Λ
^
ϊνΤΤ Σ t
c
"
( - ^
sin
ÄTTTj
sin
ÄT+T
»= ^'
·
-
N
(109)
As was the case with (103), the operation here may again be expressed as a
DFT summation by padding with zeroes the data vector whose elements are
given by the expression inside the curly braces in (109). The DFT summation
may then be computed by using an FFT algorithm.
Step 2. The Ν element vecto ...
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Publisher Resources

ISBN: 9780323139915