| .TH IM_ADDGNOISE 3 "14 May 1991" |
| .SH NAME |
| im_addgnoise \- add gaussian noise to an image |
| .SH SYNOPSIS |
| #include <vips/vips.h> |
| |
| int im_addgnoise(in, out, sigma) |
| .br |
| IMAGE *in, *out; |
| .br |
| double sigma; |
| |
| .SH 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-complex input image. |
| Input can have any no of bands. The noise is generated by adding |
| 12 random numbers. |
| |
| .SH RETURN VALUE |
| The function returns 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_add(3), im_lintra(3), im_multiply(3). |
| .SH COPYRIGHT |
| N. Dessipris |
| .SH AUTHOR |
| N. Dessipris \- 25/04/1991 |
