November 2014
Intermediate to advanced
236 pages
7h 4m
English
book
Image and Video Compression
by Madhuri A. Joshi, Mehul S. Raval, Yogesh H. Dandawate, Kalyani R. Joshi, Shilpa P. Metkar
Content preview from Image and Video Compression
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48 Image and Video Compression
5000
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0
Errors
01020304050
Quality Factor
60 70 80 90
100
(c)
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PSNR
01020304050
Quality Factor
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(d)
FIGURE 3.13 (continued )
(a) Q versus WNR, (b) Q versus NC, (c) Q versus BER, and (d) Q versus PSNR.
49Image Transforms
3.6 The Walsh-Hadamard Transform
A Walsh-Hadamard transform (WHT) is a nonsinusoidal transformation
that decomposes the signal into a set of functions known as the Walsh func-
tions. These functions are rectangular or square and orthogonal functions. ...
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