how to find average pixels value from matrix 3*3

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hello i have the 3*3 matrix now i want to find the average value of it. the image is in gray color. so how to do same...

Answers (2)

Image Analyst
Image Analyst on 4 May 2014
For one array:
meanValue = mean2(array3by3);
To do it for every pixel in an entire image:
meanImage = imfilter(grayImage, ones(3)/9);
This produces an output image where every pixel is the average of the 9 pixels at the same location in the input image.

Youssef  Khmou
Youssef Khmou on 4 May 2014
try :
H=mean(M(:));

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