| .TH IM_SMUDGE 3 "30 October 1992" |
| .SH NAME |
| im_smudge, im_smear \- filter and smudge in place |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| int |
| .br |
| im_smudge( im, ix, iy, r ) |
| .br |
| IMAGE *im; |
| .br |
| int ix, iy; |
| .br |
| Rect *r; |
| |
| int |
| .br |
| im_smear( im, ix, iy, r ) |
| .br |
| IMAGE *im; |
| .br |
| int ix, iy; |
| .br |
| Rect *r; |
| .SH DESCRIPTION |
| im_smudge() performs a low-pass filter of the pels inside rect r. Rect r is |
| clipped against the edges of the image. im_smear() is not very useful. |
| |
| Both these functions are `in place,' that is, they write directly to the |
| output image! Be very careful, you can destroy data. |
| .SH RETURN VALUE |
| All functions return 0 on success and -1 on error. |
| .SH SEE\ ALSO |
| im_insertplace(3), im_readpoint(3). |
| .SH COPYRIGHT |
| .br |
| National Gallery, 1992 |
| .SH AUTHOR |
| J. Cupitt |
