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