fhtPhase
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Name
fhtPhase - find Fourier transform phase from Hartley transform
Syntax
#include <xite/fht.h>
int fhtPhase( IR_BAND inband, IR_BAND outband );
Description
fhtPhase calculates the Fourier transform phase
from a Hartley transform. The phase is identical to
the phase calculated from the Fourier transform,
and the Hartley transform is significantly faster.
The phase values are in the interval 0..2PI.
Restrictions
Bands should have equal size. Currently, only single
precision float values are accepted.
See also
fhtPhase(1), fht2d(3), fft2d(3), ft2ht(3), ht2ft(3),
fhtPower(3)
Return value
0 => ok
1 => bad pixel type input
2 => bad pixel type output
3 => bad sizes
Author
Tor Lønnestad, BLAB, Ifi, UiO
Id
$Id: fhtPhase.c,v 1.24 1997/04/29 15:17:48 svein Exp $