function quantized_block = quantization(block, q)
    quantized_block = zeros(size(block));
     for i = 1:size(block,1)
        for j = 1:size(block,2)
             quantized_val = sign(block(i,j)) * fix(block(i,j)/q);
             quantized_block(i,j) = quantized_val;
        end
     end
end