解决构建虚拟面邻居图时的一个崩溃Bug

libs/MVS/SceneTexture.cpp

@@ -6308,6 +6308,8 @@ bool MeshTexture::CreateVirtualFaces65(
         }
     }
 
+    DEBUG_EXTRA("结束稳定的虚拟面片创建逻辑");
+
     return true;
 }
 
@@ -8640,6 +8642,7 @@ bool MeshTexture::FaceViewSelection3( unsigned minCommonCameras, float fOutlierT
 				}
 			}
 
+    		DEBUG_EXTRA("FaceViewSelection3.1");
 			// printf("perFaceFaces.size = %d\n", perFaceFaces.size());
 
 			ASSERT(controlCounter == faces.size());
@@ -8657,16 +8660,22 @@ bool MeshTexture::FaceViewSelection3( unsigned minCommonCameras, float fOutlierT
 							const FIndex fAdj(adjFaces[i]);
 							if (fAdj == NO_ID)
 								continue;
-							if (mapFaceToVirtualFace[fAdj] == idxVF)
+							const FIndex virtualAdj = mapFaceToVirtualFace[fAdj];
+							if (virtualAdj == NO_ID)
 								continue;
-							if (fAdj != idxFace && vfNeighbors.Find(mapFaceToVirtualFace[fAdj]) == Mesh::FaceIdxArr::NO_INDEX) {
-								vfNeighbors.emplace_back(mapFaceToVirtualFace[fAdj]);
+							if (virtualAdj >= virtualFaces.size())
+								continue;
+							if (virtualAdj == idxVF)
+								continue;
+							if (vfNeighbors.Find(virtualAdj) == Mesh::FaceIdxArr::NO_INDEX) {
+								vfNeighbors.emplace_back(virtualAdj);
 							}
 						}
 					}
 				}
 				//*/
 			}
+    		DEBUG_EXTRA("FaceViewSelection3.2");
 			// 3) use virtual faces to build the graph
 			// 4) assign images to virtual faces
 			// 5) spread image ID to each mesh face from virtual face
@@ -8674,21 +8683,30 @@ bool MeshTexture::FaceViewSelection3( unsigned minCommonCameras, float fOutlierT
 				MAYBEUNUSED const Mesh::FIndex idx((Mesh::FIndex)boost::add_vertex(graph));
 				ASSERT(idx == idxFace);
 			}
+    		DEBUG_EXTRA("FaceViewSelection3.3");
 			//*
 			FOREACH(idxVirtualFace, virtualFaces) {
 				const Mesh::FaceIdxArr& afaces = virtualFaceNeighbors[idxVirtualFace];
-				for (FIndex idxVirtualFaceAdj: afaces) {
+				for (FIndex idxVirtualFaceAdj : afaces) {
+					// ✅ 防御性检查
+					if (idxVirtualFaceAdj == NO_ID)
+						continue;
+					if (idxVirtualFaceAdj >= virtualFaces.size())
+						continue;
 					if (idxVirtualFace >= idxVirtualFaceAdj)
 						continue;
+
 					const bool bInvisibleFace(virtualFacesDatas[idxVirtualFace].empty());
 					const bool bInvisibleFaceAdj(virtualFacesDatas[idxVirtualFaceAdj].empty());
 					if (bInvisibleFace || bInvisibleFaceAdj)
 						continue;
+
 					boost::add_edge(idxVirtualFace, idxVirtualFaceAdj, graph);
 				}
 			}
 			//*/
 
+    		DEBUG_EXTRA("FaceViewSelection3.4");
 			// 这里通过深度图判断virtualFaces是否要为invalid
 			// CheckInvalidFaces(virtualFacesDatas, fOutlierThreshold, nIgnoreMaskLabel, views, bUseVirtualFaces))