Marching Cubes Reconstruction - Vector subscript out of range

Question

I am trying to generate mesh from a point cloud using Marching Cubes algorithm implemented in PCL. I am adapting the code given at https://github.com/atduskgreg/pcl-marching-squares-example/blob/master/marching_cubes.cpp to my point cloud (my code is given below). Visual Studio 2015 successfully builds but when I run it I get an error message about debug assertion fail. The expression is "Vector subscript out of range". Can you help me about this error message? My another question is if I can successfully generate the polygon mesh, how can I export it in .obj, .ply or .wrl format? I am looking forward to hearing from you Regards

#include <iostream>
#include <pcl/point_cloud.h>
#include <pcl/octree/octree.h>
#include<conio.h>
#include <iostream>
#include <vector>
#include <ctime>
#include <pcl/io/pcd_io.h>
#include <pcl/console/print.h>
#include <pcl/console/parse.h>
#include <pcl/console/time.h>
#include <pcl/surface/3rdparty/poisson4/geometry.h>
#include <pcl/registration/distances.h>
#include <pcl/common/distances.h>
#include <pcl/io/ply_io.h>
#include <pcl/point_types.h>
#include <pcl/search/kdtree.h>
#include <pcl/features/normal_3d_omp.h>
#include <pcl/surface/marching_cubes_rbf.h>
#include <pcl/surface/marching_cubes_hoppe.h>
#include <pcl/surface/marching_cubes.h>

int 
main(int argc, char** argv) 
{ 
        srand((unsigned int)time(NULL)); 
        pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>); 
        //pcd'ye dönüştürülen dosyanın okunması 
        pcl::io::loadPCDFile<pcl::PointXYZ>("silindir_arka_ENTIRE_DATA_ELIMINATED_REG_PCD.pcd", *cloud); 
        pcl::NormalEstimation<pcl::PointXYZ, pcl::Normal> ne; 
        ne.setInputCloud(cloud); 
        pcl::search::KdTree<pcl::PointXYZ>::Ptr tree1(new pcl::search::KdTree<pcl::PointXYZ>()); 
        tree1->setInputCloud(cloud); 
        ne.setInputCloud(cloud); 
        ne.setSearchMethod(tree1); 
        ne.setKSearch(20); 
        pcl::PointCloud<pcl::Normal>::Ptr cloud_normals(new pcl::PointCloud<pcl::Normal>); 
        ne.compute(*cloud_normals); 

        pcl::PointCloud<pcl::PointNormal>::Ptr cloud_with_normals(new pcl::PointCloud<pcl::PointNormal>); 
        pcl::concatenateFields(*cloud, *cloud_normals, *cloud_with_normals); 
        cloud_with_normals->points[0].normal_x; 

        std::cout << cloud_with_normals->points[0].normal_x << " " << cloud_with_normals->points[0].normal_y << " " << cloud_with_normals->points[0].normal_z << std::endl; 
        pcl::search::KdTree<pcl::PointNormal>::Ptr tree(new pcl::search::KdTree<pcl::PointNormal>()); 
        tree->setInputCloud(cloud_with_normals); 
        std::cout << "begin marching cubes reconstruction" << std::endl; 

        pcl::MarchingCubesHoppe<pcl::PointNormal> mc; 
        pcl::PolygonMesh::Ptr triangles(new pcl::PolygonMesh); 

        std::cout << "111" << std::endl; 
        mc.setInputCloud(cloud_with_normals); 
        std::cout << "222" << std::endl; 
        mc.setSearchMethod(tree); 
        std::cout << "333" << std::endl; 
        mc.reconstruct(*triangles); 

        std::cout << triangles->polygons.size() << " triangles created" << std::endl; 

        return(0); 

}

I would probably be helpful to know which function call results in the assertion failure. — Gert Wollny, Apr 24 '17 at 09:55

score 0 · Answer 1 · answered Apr 24 '17 at 14:37

It looks like the vector subscript out of range comes from indexing into cloud_with_normals at [0]. I would check the size of cloud and cloud_normals and see if concatenateFields() has the output you expect. Since you are using Visual Studio, you can use the debugging tools to see when the unexpected behavior starts.

Marching Cubes Reconstruction - Vector subscript out of range

1 Answers1