mlib_ImageMean(3MLIB) mediaLib Library Functions mlib_ImageMean(3MLIB)NAMEmlib_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 │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │MT-Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOmlib_ImageMean_Fp(3MLIB), mlib_ImageStdDev(3MLIB), mlib_ImageStd‐
Dev_Fp(3MLIB), attributes(5)SunOS 5.10 2 Mar 2007 mlib_ImageMean(3MLIB)
