im_addgnoise(3) im_addgnoise(3)
NAME
im_addgnoise - add gaussian noise to an image
SYNOPSIS
#include <vips/vips.h>
int im_addgnoise(in, out, sigma)
IMAGE *in, *out;
double sigma;
DESCRIPTION
im_addgnoise() adds gaussian noise with mean 0 and standard deviation
sigma to the image held by the image descriptor in and writes the
result on the image descriptor out. The function works on any non-com-
plex input image. Input can have any no of bands. The noise is gener-
ated by adding 12 random numbers.
RETURN VALUE
The function returns 0 on success and -1 on error.
SEE ALSO
im_add(3), im_lintra(3), im_multiply(3).
COPYRIGHT
N. Dessipris
AUTHOR
N. Dessipris - 25/04/1991
14 May 1991 im_addgnoise(3)
im_addgnoise 7.14.5 - Generated Fri Sep 5 19:36:16 CDT 2008