| .TH IM_FAV4 3 "13 April 1992" |
| .SH NAME |
| im_fav4 \- averages four frames |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| .B int im_fav4(in, out) |
| .br |
| .B IMAGE **in, *out; |
| .SH DESCRIPTION |
| .B im_fav4 |
| averages four input VIPS images, which must be unsigned byte images with any |
| number of bands. This is useful for noise reduction by grabbing 4 frames |
| and averaging them. With 7 bit images this will give quite a convincing |
| eighth bit. |
| .SH RETURN VALUE |
| returns 0 on success or -1 on error |
| .SH SEE\ ALSO |
| add(1) |
| .SH COPYRIGHT |
| .br |
| K. Martinez 13/4/92 |
| |
