How generate nested structs and access to them?

I wrote a test-script to generate a struct with several sub-structs. The variable 'template_matching_results' shall be a list of all 'i_i', which is flag for different images. The sub-structs 'i_i' shall contain a list of all 'i_t'. In this way I want to create further level of the struct 'w_i_t' and 'v_trans_i_t'. The last one shall be a long table with the colomns 'h_trans_i_t', 'sum_ones_i_i', 'sum_ones_i_t', 'sum_matches'.

How can I get the following script filling the struct with the indexes of the loops?

clear all;

template_matching_results = struct('i_i', '');
template_matching_results.i_i = struct('i_t', '');
template_matching_results.i_i.i_t = struct('w_i_t', '');
template_matching_results.i_i.i_t.w_i_t = struct('v_trans_i_t', '');
template_matching_results.i_i.i_t.w_i_t.v_trans_i_t = struct('h_trans_i_t', '', 'sum_ones_i_i', '', 'sum_ones_i_t', '', 'sum_matches', '');

for i_i = 1:3
    template_matching_results.i_i = i_i;
    for i_t = 1:3
        template_matching_results.i_i.i_t = i_t;
        for w_i_t = 1:3
            template_matching_results.i_i.i_t.w_i_t = w_i_t;
            for v_trans_i_t = 1:3
                template_matching_results.i_i.i_t.w_i_t.v_trans_i_t = v_trans_i_t;
            end
        end
    end
end