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i had converted image into blocks. I converted blocks to linear array. Next i calculated mean values for first 8 arrays as given below. now i want to calculate error values by using the formula: sum(linear array(:,1)​-mean(:,1)​).^2. please send code.

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sri raj
sri raj 2016-4-4
关闭： MATLAB Answer Bot 2021-8-20
for i=1:4:nr-3
for j=1:4:nc-3
block=I(i:i+3,j:j+3);
%convert 4X4 into 16X1 column vector
tv(:,col)=reshape(block,16,1);
col=col+1;
count=count+1;
column=column+4;
end
row=row+4;
end
%find mean of 8 arrays me=1; nn=8; nnn=1; for count=1:nr+nc cv(:,r) = mean(tv(:,me:nn*nnn), 2); r=r+1; nnn=nnn+1; me=me+8; end

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