31 lines
854 B
Groff
31 lines
854 B
Groff
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.TH IM_MPERCENT 3 "14 May 1991"
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.SH NAME
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im_mpercent \- find threshold corresponding to a percentage of an image values
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.SH SYNOPSIS
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#include <vips/vips.h>
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int im_mpercent( in, percent, thresh )
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.br
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IMAGE *in;
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.br
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int percent;
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.br
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int *thresh;
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.SH DESCRIPTION
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im_mpercent() returns (through the thresh parameter) the threshold above which
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there are percent values of the input image. If for example percent=.1, the
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number of pels of the input image with values greater than the returned int
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will correspond to 10% of all pels of the image.
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The function is applied on one band FMTUCHAR images only. It can be
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used in order to threshold the scaled result of a filtering operation.
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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_conv(3), im_zerox(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 \- 14/05/1991
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