| .TH IM_ANDIMAGE 3 "30 October 1992" |
| .SH NAME |
| im_andimage, im_andconst, im_and_vec, im_orimage, im_orconst, im_or_vec, |
| im_eorimage, im_eorconst, im_eor_vec \- boolean |
| operations on unsigned char images |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| .B int im_andimage(a, b, out) |
| .br |
| .B IMAGE *a, *b, *out; |
| |
| .B int im_andconst(a, out, c) |
| .br |
| .B IMAGE *a, *out; |
| .br |
| .B double c; |
| |
| .B int im_and_vec(a, out, n, v) |
| .br |
| .B IMAGE *a, *out; |
| .br |
| .B int n; |
| .br |
| .B double *v; |
| |
| .B int im_orimage(a, b, out) |
| .br |
| .B IMAGE *a, *b, *out; |
| |
| .B int im_orconst(a, out, c) |
| .br |
| .B IMAGE *a, *out; |
| .br |
| .B double c; |
| |
| .B int im_or_vec(a, out, n, v) |
| .br |
| .B IMAGE *a, *out; |
| .br |
| .B int n; |
| .br |
| .B double *v; |
| |
| .B int im_eorimage(a, b, out) |
| .br |
| .B IMAGE *a, *b, *out; |
| |
| .B int im_eorconst(a, out, c) |
| .br |
| .B IMAGE *a, *out; |
| .br |
| .B double c; |
| |
| .B int im_eor_vec(a, out, n, v) |
| .br |
| .B IMAGE *a, *out; |
| .br |
| .B int n; |
| .br |
| .B double *v; |
| |
| .SH DESCRIPTION |
| Perform bitwise logical operations on integer images. |
| |
| .B im_andimage(3) |
| performs bitwise and between corresponding pixels in a and b, writing the |
| result to out. Both images must be the same size and have the same number |
| of bands. They can have any integer type. |
| |
| .B im_andconst(3) |
| performs bitwise and between pixels in a and a single |
| constant value. |
| .B im_and_vec(3) |
| lets you specify n constants, one per band. |
| |
| .B im_orimage(3) |
| and |
| .B im_eorimage(3) |
| behave similarly. Use im_eorconst( in, out, -1 ) or |
| .B im_invert(3) |
| as a not operator. |
| |
| .SH RETURN VALUE |
| All functions return 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_ifthenelse(3), im_equal(3). |
| .SH COPYRIGHT |
| National Gallery, 1992 |
| .SH AUTHOR |
| J. Cupitt |
