finding maximum abs value of four images

I have four 16x16 images.I want to form another image by taking the maximum abs value of all four values of a particular pixel e.g. by comparing I1(3,3),I2(3,3),I3(3,3) and I4(3,3),I will be getting I5(3,3).

my piece of code is:

for k:4
.......
figure,imshow(B);
    s=size(B)
   eval(sprintf('im_%d=B;',k));
end

[Jan]

Avoid using EVAL to hide an index in the name of a variable. It is much easier, nicer and more efficient to use an index as index:

im = cell(1, 4);
for k = 1:4
  ...
  im{k} = B;
end

Answer 1

[Matt Kindig]

No loops necessary:

CombinedImages = cat(3, I1, I2, I3, I4)
I5 = max(abs(CombinedImages),[],3)

[Mahua Nandy(Pal)]

thanks a lot

Answer 2

[Azzi Abdelmalek]

[n,m]=size(im1);
for k=1:n
    for p=1:m
       v=[im1(k,p) im2(k,p) im3(k,p) im4(k,p)];
       [~,idx]=max(abs(v));
       im(k,p)=v(idx);
    end
end