mlib_ImageMean(3MLIB) mediaLib Library Functions mlib_ImageMean(3MLIB)
NAME
mlib_ImageMean - image mean
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_ImageMean(mlib_d64 *mean, const mlib_image *img);
DESCRIPTION
The mlib_ImageMean() function computes the mean value of all the pixels in the image.
It uses the following equation:
1 w-1 h-1
mean[i] = ----- * SUM SUM img[x][y][i]
w*h x=0 y=0
PARAMETERS
The function takes the following arguments:
mean Pointer to mean array, where length is the number of channels in the image. mean[i] contains the mean of channel i.
img Pointer to an image.
RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
mlib_ImageMean_Fp(3MLIB), mlib_ImageStdDev(3MLIB), mlib_ImageStdDev_Fp(3MLIB), attributes(5)
SunOS 5.10 10 Nov 2004 mlib_ImageMean(3MLIB)
