thresSigma
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Name
thresSigma - threshold at fraction of standard deviation
Syntax
#include <xite/threshold.h>
int thresxsigma(h, x)
histogram h;
double x;
int thresSigma( histogram h, double x );
Description
thresSigma calculates the threshold value by finding
the mean (mu) and the standard deviation (sigma)
of the image, and then finding the threshold by
the formula:
t = mu + (x * sigma)
The actual thresholding is not performed, see the
routine "threshold".
Return value
The threshold value. Pixel values up to, and including,
the return value, is below the threshold.
Author
Olav Borgli, BLAB, ifi, UiO
Id
$Id: thresSigma.c,v 1.20 1996/11/08 14:06:11 svein Exp $