reconstruct the decomposed image

I am applying Wavelet decomposition of 4 Level but ![enter image description here][1]while reconstructing the same RGB image its coming in 3 parts. code is as below

fullRecon = cAA{nLevel};
for iLevel = nLevel:-1:1,
  fullRecon = idwt2(fullRecon,cHH{iLevel},cVV{iLevel},cDD{iLevel},'db1');
end
figure, imshow(uint8(fullRecon)),title('Full Recont Image');