MATLAB: Averaging data set in horizontal as well as vertical direction

dominik seifert

suppose we have large no of data..like

1 2 3 4 5 6 7 3 4 5 6 7

3 4 5 6 7 8 3 4 2 4 2 4

1 5 4 2 3 5 4 5 6 5 2 3

1 2 3 4 5 6 7 3 4 5 6 7

3 4 5 6 7 8 3 4 2 4 2 4..

the average in both direction like

1 2 3 4

3 4 5 6

1 5

1 2

average of above set like …so that we can convert 1024*1024 file into 512*512..

Best Answer

A = rand(1024,1024) ; 
out = blockproc(A,[2 2],@(x)mean(x.data(:)));

Refer more here: https://in.mathworks.com/matlabcentral/answers/362262-i-have-a-32-32-matrix-i-want-to-take-mean-of-each-4-4-so-that-the-matrix-is-reduced-to-8-8-array#answer_286773

Related Solutions

MATLAB: How to calculate the mean of the elements values of the array according to objects of the other array.

A is your labeled matrix. B is your intensity matrix. Use regionprops() (in the Image Processing Toolbox) and ask for MeanIntensity:

A = [3 3 3 3 1 1 1 1 1 1 8 8;
  3 3 3 5 1 1 1 1 1 8 8 8;
  3 3 3 5 5 1 1 1 8 8 8 8;
  3 3 3 5 5 5 1 8 8 8 8 8;
  7 7 7 5 5 5 6 6 6 8 8 8;
  7 7 7 5 5 5 6 6 6 4 4 4;
  7 7 2 2 2 6 6 6 6 4 4 4;
  7 2 2 2 2 6 6 6 6 4 4 4;
  2 2 2 2 2 2 6 6 4 4 4 4]
B = [5 4 4 3 7 5 8 8 7 9 4 8;
  6 8 9 4 2 3 6 7 7 7 6 8;
  7 2 4 7 7 9 4 2 4 8 8 9;
  8 2 4 2 6 5 2 8 1 1 7 9;
  4 8 2 8 8 3 2 2 6 2 5 8;
  1 1 3 1 6 4 5 6 2 7 3 1;
  7 7 3 5 9 7 4 5 7 7 7 1;
  3 7 9 1 4 4 7 2 5 7 4 1;
  8 4 3 7 4 2 1 1 3 5 6 3]
props = regionprops(A, B, 'MeanIntensity')
allIntensities = [props.MeanIntensity]
C = zeros(size(A))
for k = 1 : max(A(:))
  C(A==k) = allIntensities(k);
end
C % Print to command window.

Best Answer

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