remove additional struct for threshold and edge0~3, use new and delete
add oversegmentation drawing function generate_output_s() in gbh.cu, add 1 for hierarchical while making the output directory in gbh.cu, for (int i = 0; i <= (hie_num+1); i++), add 1 for generate_output(), snprintf(savepath, 1023, %s/%02d/%05d.ppm, path, k+1, i + 1);