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im_mpercent(3)                                                  im_mpercent(3)




NAME

       im_mpercent  - find threshold corresponding to a percentage of an image
       values


SYNOPSIS

       #include <vips/vips.h>

       int im_mpercent( in, percent, thresh )
       IMAGE *in;
       int percent;
       int *thresh;



DESCRIPTION

       im_mpercent() returns (through  the  thresh  parameter)  the  threshold
       above which there are percent values of the input image. If for example
       percent=.1, the number of pels of the input image with  values  greater
       than  the returned int will correspond to 10% of all pels of the image.

       The function is applied on one band FMTUCHAR images only.   It  can  be
       used  in order to threshold the scaled result of a filtering operation.


RETURN VALUE

       The function returns 0 on success and -1 on error.


SEE ALSO

       im_conv(3), im_zerox(3).


COPYRIGHT

       N. Dessipris


AUTHOR

       N. Dessipris - 14/05/1991



                                  14 May 1991                   im_mpercent(3)

im_mpercent 7.14.5 - Generated Mon Sep 8 06:37:50 CDT 2008
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