Section: C Library Functions (3) Updated: 07 July 1990 Local index
im_rotquad - rotates the four quadrants of an image
int im_rotquad(in, out)
IMAGE *in, *out;
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
The function operates on any input;
output has the same format, sizes and bands as input.
The function returns 0 on success and -1 on error.
im_fwfft(3), im_invfft(3), im_scaleps(3).
N. Dessipris - 06/07/1990
- RETURN VALUE
- SEE ALSO
This document was created by
using the manual pages.
Time: 21:48:26 GMT, April 16, 2011