how to recombine subimages from cell2mat which is divided into blocks of 8x8?What is mistake in the code? Actually after splitting into window size of 8x8 by using mat2cell() .

I am not able to reconstruct back into the whole image which is needed as per the algorithm in order to perform other operations. So plz suggest some command or technique.

            a=VideoReader('test.mp4 ');
            b = read(a,1 );
            c=rgb2gray(b ); 
            nframe=a.NumberOfFrames ;
            for i=115:116 
                prev_frame =read(a,i-1 ); 
                e=rgb2gray(prev_frame  ); 
                figure 
                imshow(e );  
                pause(0.2)
                current_frame =read(a,i); 
                h=rgb2gray(current_frame ); 
                figure 
                imshow(h);  
                rows = 8 ; 
                columns = 8 ; 
                [H,W,~] = size(c );
                szH = [repmat(fix(H/rows),1,rows )]; 
                szW = [repmat(fix(W/columns),1,columns )]; //to split into window size of 8x8 as per my algorithm
                C = mat2cell(e, szH, szW )'; 
                D = mat2cell(h, szH, szW )'; 
                figure
                for j=1:rows*columns 
                    subplot(rows,columns,j), imshow( C{j } ) //to plot above cells
                end  
                figure
                for j=1:rows*columns 
                    subplot(rows,columns,j), imshow( D{j } ) 
                end  
                for k=1:1*8
                    o=1:1*8
                    G=cell2mat(C(k,o)'); 
                    figure
                    imshow(G);at this point i am getting images which i am not able to recombine.kindly suggest something here
                end
                for k=1:8
                    o=1:8
                    H=cell2mat(D(k,o)'); 
                    figure
                    imshow(H);
                end
                w=std(double(G));
                figure
                plot(w);
                b=std(double(H));
                figure
                plot(b);
                level=graythresh(G);
                level=graythresh(H);
                if level>level1
                    T=im2bw(G);
                    figure
                    imshow(T);
                else
                    P=im2bw(H);
                    figure
                    imshow(P);
                end
            end

Answer 1

[KSSV]

Try like this:

GG = cell(8,1) ;
    for k=1:1*8
        o=1:1*8 ;
        G=cell2mat(C(k,o)');
        GG{k} = G ;
        figure        
        imshow(G);% at this point i am getting images which i am not able to recombine.kindly suggest something here
    end
I = [GG{:}]

Now I is your whole image....