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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
8.2 The Fourier Slice Theorem
365
where 7^ is the difference between the transit time through the material and
the transit time when the material is replaced by water. T
d
is positive if the
former transit time is longer than the latter. Note that we have expressed
the ray integral for 1
n(x
9
y)
rather than n(x, y). To ensure that in the
reconstructed image the background values are zero, one usually makes the
image for 1 n(x, y). [For a point in water outside the material we have
n(x, y) = 1, so that 1 n(x, y) = 0.]
The ray integral is valid provided in Fig. 8 the ultrasonic beam travels
along a straight line from A to B. In medical imagin ...
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Publisher Resources

ISBN: 9780323139915