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