MATLAB: How to Subtract two jpg image of different dimension

Image Processing Toolboximage resize

Imback = rand(3024, 4032, 3);
Imback1 = rand(480, 720, 3);
f=Imback(1:480, 1:720, 3);
Diff1 = uint8(imresize(Imback,[480 720 3])-Imback1);

i am getting error

Best Answer

use [480 720] not [480 720 3]

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A=rand(5,1)
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Hi Visa,

This seems to work

A1 = 2;
A2 = 3;
A3 = 4;
N =  7;
A = rand(A1, A2, A3, N);
V = rand(1, N);
% ---- method 1
B1 = NaN(A1, A2, A3);
for i = 1:A1
  for j = 1:A2
    for k = 1:A3
      B1(i,j,k) = squeeze(A(i,j,k,:))' * V';
    end
  end
end
% ---- method 2
D = permute(A,[4 1 2 3]);
E = reshape(D,N,A1*A2*A3);
F = V*E;
B2 = reshape(F,A1,A2,A3);
max(max(max(max(abs(B1-B2)))))     ans = 8.8818e-16

Best Answer

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MATLAB: Concatenate along singleton dimension

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