diff --git a/network_process/include/prim_gen.hpp b/network_process/include/prim_gen.hpp
index 8901fd1..51e7b71 100644
--- a/network_process/include/prim_gen.hpp
+++ b/network_process/include/prim_gen.hpp
@@ -19,7 +19,7 @@ void                    build_tetrahedron_and_adjacency(const scene_bg_mesh_info
                                                         flat_hash_map_mp<uint32_t, stl_vector_mp<uint32_t>>& reverse_vertex_adjacency,
                                                         btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>&     vertex_to_tet_mapping);
 void                    filter_tet_by_subface(const btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>&     vertex_to_tet_mapping,
-                                              Eigen::Ref<Eigen::MatrixXd>                                vertex_infos,
+                                              Eigen::MatrixXd&                                           vertex_infos,
                                               flat_hash_map_mp<uint32_t, uint32_t>&                      vertex_indices_mapping,
                                               stl_vector_mp<std::array<uint32_t, 4>>&                    tetrahedrons,
                                               flat_hash_map_mp<uint32_t, uint32_t>&                      vertex_lexigraphical_adjacency,
diff --git a/network_process/src/prim_gen/filter_tet_by_subface.cpp b/network_process/src/prim_gen/filter_tet_by_subface.cpp
index b03d9cd..ff8dded 100644
--- a/network_process/src/prim_gen/filter_tet_by_subface.cpp
+++ b/network_process/src/prim_gen/filter_tet_by_subface.cpp
@@ -16,7 +16,7 @@
 // };
 
 void filter_tet_by_subface(const btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>&     vertex_to_tet_mapping,
-                           Eigen::Ref<Eigen::MatrixXd>                                vertex_infos,
+                           Eigen::MatrixXd&                                           vertex_infos,
                            flat_hash_map_mp<uint32_t, uint32_t>&                      vertex_indices_mapping,
                            stl_vector_mp<std::array<uint32_t, 4>>&                    tetrahedrons,
                            flat_hash_map_mp<uint32_t, uint32_t>&                      vertex_lexigraphical_adjacency,
@@ -140,6 +140,7 @@ void filter_tet_by_subface(const btree_map_mp<uint32_t, stl_vector_mp<uint32_t>>
         filtered_vertex_lexigraphical_adjacency.emplace(vertex_index, vertex_indices_mapping.at(vertex_index));
         filtered_vert_infos_iter++;
     }
+    vertex_infos.resize(filtered_vert_infos.rows(), filtered_vert_infos.cols());
     vertex_infos                   = std::move(filtered_vert_infos);
     vertex_lexigraphical_adjacency = std::move(filtered_vertex_lexigraphical_adjacency);
 }
\ No newline at end of file
diff --git a/network_process/src/process.cpp b/network_process/src/process.cpp
index 8c9aeab..36fea8c 100644
--- a/network_process/src/process.cpp
+++ b/network_process/src/process.cpp
@@ -106,6 +106,10 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
         {
             arrangement_cells.reserve(shells.size());
             for (uint32_t i = 0; i < shells.size(); ++i) { arrangement_cells.emplace_back(stl_vector_mp<uint32_t>{i}); }
+            shell_to_cell.resize(shells.size());
+            for (uint32_t i = 0; i < arrangement_cells.size(); i++) {
+                for (auto shell : arrangement_cells[i]) shell_to_cell[shell] = i;
+            }
         } else {
             {
                 stl_vector_mp<std::pair<uint32_t, uint32_t>> shell_links{};
@@ -124,10 +128,6 @@ ISNP_API void build_implicit_network_by_blobtree(const s_settings&
                                   shell_links);
                 compute_arrangement_cells(static_cast<uint32_t>(shells.size()), shell_links, arrangement_cells);
             }
-            shell_to_cell.resize(shells.size());
-            for (uint32_t i = 0; i < arrangement_cells.size(); i++) {
-                for (auto shell : arrangement_cells[i]) shell_to_cell[shell] = i;
-            }
         }
         // post process
         {