在 Ubuntu 上使用点云库,我试图从 Kinect 中获取多个点云并将它们存储在内存中以供以后在程序中使用。我在这篇文章底部显示的代码旨在存储来自 Kinect 的第一个点云并输出其宽度和高度。该程序给了我一个运行时错误:
/usr/include/boost/smart_ptr/shared_ptr.hpp:418: T* boost::shared_ptr<T>::operator->() const [with T = pcl::PointCloud<pcl::PointXYZ>]: Assertion `px != 0' failed.
非常感谢所有帮助,我总是接受答案!
编码:
#include <pcl/io/openni_grabber.h>
#include <pcl/visualization/cloud_viewer.h>
class SimpleOpenNIViewer
{
public:
SimpleOpenNIViewer () : viewer ("PCL OpenNI Viewer") {}
pcl::PointCloud<pcl::PointXYZ>::Ptr prevCloud;
void cloud_cb_ (const pcl::PointCloud<pcl::PointXYZ>::ConstPtr &cloud)
{
if (!viewer.wasStopped())
viewer.showCloud (cloud);
//ICP start
if(!prevCloud) {
pcl::PointCloud<pcl::PointXYZ>::Ptr prevCloud( new pcl::PointCloud<pcl::PointXYZ>());
pcl::copyPointCloud<pcl::PointXYZ, pcl::PointXYZ>(*cloud, *prevCloud);
}
cout << prevCloud->width << " by " << prevCloud->height << endl;
}
void run ()
{
pcl::Grabber* interface = new pcl::OpenNIGrabber();
boost::function<void (const pcl::PointCloud<pcl::PointXYZ>::ConstPtr&)> f =
boost::bind (&SimpleOpenNIViewer::cloud_cb_, this, _1);
interface->registerCallback (f);
interface->start ();
while (!viewer.wasStopped())
{
boost::this_thread::sleep (boost::posix_time::seconds (1));
}
interface->stop ();
}
pcl::visualization::CloudViewer viewer;
};
int main ()
{
SimpleOpenNIViewer v;
v.run ();
return 0;
}