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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
402
8 Reconstruction
y
In order to express the reconstruction formula given by (91) in a form
that can be easily implemented on a computer we will first examine the
argument of the function h. The argument may be rewritten as
r cos(jS + y φ) D sin y = r cos(ß φ) cos γ [r sin(ß φ) + D] sin γ
(92)
Let L be the distance from the source S to a point (x, y) [or (r, φ) in polar
coordinates] such as C in Fig. 26. Clearly, L is a function of three variables
r, φ, and ß. Also, let y' be the angle of the ray that passes through this point.
One can easily show that
L cos y' = D + r sin(/? φ) and L sin y' = r cos(ß φ) (93)
Fig. 26 This figure ...
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Publisher Resources

ISBN: 9780323139915