def compute_ppi_corrected_res_array(res_array, ppi_list_rel_density):
    """Return ppi density normalized sizes of the real resolutions."""
    eff_res_array = []
    for i in range(len(res_array)):
        effw = round(res_array[i][0] / ppi_list_rel_density[i])
        effh = round(res_array[i][1] / ppi_list_rel_density[i])
        eff_res_array.append((effw, effh))
    return eff_res_array
