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im_rotquad
Langue: en
Version: 170613 (fedora - 06/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
im_rotquad - rotates the four quadrants of an imageSYNOPSIS
#include <vips/vips.h>int im_rotquad(in, out)
IMAGE *in, *out;
DESCRIPTION
im_rotquad rotates the four quadrants of the image held by the image descriptor in and writes the result on the image descriptor out.The function is used primarily to rotate a fourier transform in such a way that the coordinate (0,0) is near the centre of the image, the so-called optical transform.
The function operates on any input; output has the same format, sizes and bands as input.
RETURN VALUE
The function returns 0 on success and -1 on error.SEE ALSO
im_fwfft(3), im_invfft(3), im_scaleps(3).COPYRIGHT
N. Dessipris
AUTHOR
N. Dessipris - 06/07/1990Contenus ©2006-2024 Benjamin Poulain
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