convert matrix into 8*8

sir i have 64*64 matrix and i want to convert every 4*4 block of 64*64 matrix into 8*8 matrix..how to do this

Answer 1

[Dishant Arora]

originalArray = ones(64);
C = mat2cell(A , 4*ones(1,16) , 4*ones(1,16))
C = cellfun(@(x) padarray(x , [2,2]) , C , 'Un' , 0)
outputArray = cell2mat(C)