PCL简介
PCL(Point Cloud Library)是在吸收了前人点云相关研究基础上建立起来的大型跨平台开源C++编程库,它实现了大量点云相关的通用算法和高效数据结构,涉及到点云获取、滤波、分割、配准、检索、特征提取、识别、追踪、曲面重建、可视化等。支持多种操作系统平台,可在Windows、Linux、Android、Mac OS X、部分嵌入式实时系统上运行。如果说OpenCV是2D信息获取与处理的结晶,那么PCL就在3D信息获取与处理上具有同等地位,PCL是BSD授权方式,可以免费进行商业和学术应用。
最近刚接触PCL,发现用到PCL的人还是比较少,可供学习的资料也不多,所以,我想从头开始学习,并记录下学习的过程。如果有兴趣一起学习的同学可以加我QQ761551935,我们一起交流学习。
学习资源:
PCL 1.8.0 比较全的安装包及安装步骤:http://unanancyowen.com/en/pcl18/
PCL 相关资料汇总:https://github.com/neilgu00365/Survey-for-SfMMission
PCL 中国点云库:http://www.pclcn.org/
环境:windows+vs2010
如果你没有vs2010我给你分享一个安装包链接:http://pan.baidu.com/s/1pL3I0dH 密码:a53o
一、下载
我用的是PCL 1.6.0 All-In-One Installer,Windows MSVC 2010 (32bit),所以,下面是以这个版本为主。其实,只要下载PCL-1.6.0-AllInOne-msvc2010-win32.exe、OpenNI 1.5.4 (patched)和Sensor 5.1.0 (patched)三个文件就可以了,PCL-1.6.0-AllInOne-msvc2010-win32.exe内部已经包含了全部的依赖库,安装的过程中,OpenNI会安装不上,所以要单独下载,其它的依赖库都可以不用下载。
二、安装
分别安装
1、PCL-1.6.0-AllInOne-msvc2010-win32.exe
2、OpenNI-Win32-1.5.4-Dev.msi
3、Sensor-Win-OpenSource32-5.1.0.msi
注意:你要编译的是Win32和Win64的版本要区别开,PCL和依赖库都统一用同一个版本的,否则运行的时候会报错。
三、配置

1、配置包含路径
将PCL安装路径下的3rdParty目录下的include添加进去,另外OpenNI单独安装的路径也添加进去,还有PCL安装路径下的Includepcl-1.6也添加进去。

2、配置库路径
将PCL安装路径下的3rdParty目录下的lib添加进去,另外OpenNI单独安装的路径也添加进去,还有PCL安装路径下的lib也添加进去。

3、配置输入库文件
添加下列文件名
<span>opengl32.lib
pcl_apps_debug.lib
pcl_common_debug.lib
pcl_features_debug.lib
pcl_filters_debug.lib
pcl_io_debug.lib
pcl_io_ply_debug.lib
pcl_kdtree_debug.lib
pcl_keypoints_debug.lib
pcl_octree_debug.lib
pcl_registration_debug.lib
pcl_sample_consensus_debug.lib
pcl_search_debug.lib
pcl_segmentation_debug.lib
pcl_surface_debug.lib
pcl_tracking_debug.lib
pcl_visualization_debug.lib
flann_cpp_s</span>-<span>gd.lib
boost_chrono</span>-vc100-mt-gd-<span>1_49.lib
boost_date_time</span>-vc100-mt-gd-<span>1_47.lib
boost_date_time</span>-vc100-mt-gd-<span>1_49.lib
boost_filesystem</span>-vc100-mt-gd-<span>1_47.lib
boost_filesystem</span>-vc100-mt-gd-<span>1_49.lib
boost_graph</span>-vc100-mt-gd-<span>1_49.lib
boost_graph_parallel</span>-vc100-mt-gd-<span>1_49.lib
boost_iostreams</span>-vc100-mt-gd-<span>1_47.lib
boost_iostreams</span>-vc100-mt-gd-<span>1_49.lib
boost_locale</span>-vc100-mt-gd-<span>1_49.lib
boost_math_c99</span>-vc100-mt-gd-<span>1_49.lib
boost_math_c99f</span>-vc100-mt-gd-<span>1_49.lib
boost_math_tr1</span>-vc100-mt-gd-<span>1_49.lib
boost_math_tr1f</span>-vc100-mt-gd-<span>1_49.lib
boost_mpi</span>-vc100-mt-gd-<span>1_49.lib
boost_prg_exec_monitor</span>-vc100-mt-gd-<span>1_49.lib
boost_program_options</span>-vc100-mt-gd-<span>1_49.lib
boost_random</span>-vc100-mt-gd-<span>1_49.lib
boost_regex</span>-vc100-mt-gd-<span>1_49.lib
boost_serialization</span>-vc100-mt-gd-<span>1_49.lib
boost_signals</span>-vc100-mt-gd-<span>1_49.lib
boost_system</span>-vc100-mt-gd-<span>1_47.lib
boost_system</span>-vc100-mt-gd-<span>1_49.lib
boost_thread</span>-vc100-mt-gd-<span>1_47.lib
boost_thread</span>-vc100-mt-gd-<span>1_49.lib
boost_timer</span>-vc100-mt-gd-<span>1_49.lib
boost_unit_test_framework</span>-vc100-mt-gd-<span>1_49.lib
boost_wave</span>-vc100-mt-gd-<span>1_49.lib
boost_wserialization</span>-vc100-mt-gd-<span>1_49.lib
libboost_chrono</span>-vc100-mt-gd-<span>1_49.lib
libboost_date_time</span>-vc100-mt-gd-<span>1_47.lib
libboost_date_time</span>-vc100-mt-gd-<span>1_49.lib
libboost_filesystem</span>-vc100-mt-gd-<span>1_47.lib
libboost_filesystem</span>-vc100-mt-gd-<span>1_49.lib
libboost_graph_parallel</span>-vc100-mt-gd-<span>1_49.lib
libboost_iostreams</span>-vc100-mt-gd-<span>1_47.lib
libboost_iostreams</span>-vc100-mt-gd-<span>1_49.lib
libboost_locale</span>-vc100-mt-gd-<span>1_49.lib
libboost_math_c99</span>-vc100-mt-gd-<span>1_49.lib
libboost_math_c99f</span>-vc100-mt-gd-<span>1_49.lib
libboost_math_tr1</span>-vc100-mt-gd-<span>1_49.lib
libboost_math_tr1f</span>-vc100-mt-gd-<span>1_49.lib
libboost_mpi</span>-vc100-mt-gd-<span>1_49.lib
libboost_prg_exec_monitor</span>-vc100-mt-gd-<span>1_49.lib
libboost_program_options</span>-vc100-mt-gd-<span>1_49.lib
libboost_random</span>-vc100-mt-gd-<span>1_49.lib
libboost_regex</span>-vc100-mt-gd-<span>1_49.lib
libboost_serialization</span>-vc100-mt-gd-<span>1_49.lib
libboost_signals</span>-vc100-mt-gd-<span>1_49.lib
libboost_system</span>-vc100-mt-gd-<span>1_47.lib
libboost_system</span>-vc100-mt-gd-<span>1_49.lib
libboost_test_exec_monitor</span>-vc100-mt-gd-<span>1_49.lib
libboost_thread</span>-vc100-mt-gd-<span>1_47.lib
libboost_thread</span>-vc100-mt-gd-<span>1_49.lib
libboost_timer</span>-vc100-mt-gd-<span>1_49.lib
libboost_unit_test_framework</span>-vc100-mt-gd-<span>1_49.lib
libboost_wave</span>-vc100-mt-gd-<span>1_49.lib
libboost_wserialization</span>-vc100-mt-gd-<span>1_49.lib
vtkalglib</span>-<span>gd.lib
vtkCharts</span>-<span>gd.lib
vtkCommon</span>-<span>gd.lib
vtkDICOMParser</span>-<span>gd.lib
vtkexoIIc</span>-<span>gd.lib
vtkexpat</span>-<span>gd.lib
vtkFiltering</span>-<span>gd.lib
vtkfreetype</span>-<span>gd.lib
vtkftgl</span>-<span>gd.lib
vtkGenericFiltering</span>-<span>gd.lib
vtkGeovis</span>-<span>gd.lib
vtkGraphics</span>-<span>gd.lib
vtkhdf5</span>-<span>gd.lib
vtkHybrid</span>-<span>gd.lib
vtkImaging</span>-<span>gd.lib
vtkInfovis</span>-<span>gd.lib
vtkIO</span>-<span>gd.lib
vtkjpeg</span>-<span>gd.lib
vtklibxml2</span>-<span>gd.lib
vtkmetaio</span>-<span>gd.lib
vtkNetCDF</span>-<span>gd.lib
vtkNetCDF_cxx</span>-<span>gd.lib
vtkpng</span>-<span>gd.lib
vtkproj4</span>-<span>gd.lib
vtkRendering</span>-<span>gd.lib
vtksqlite</span>-<span>gd.lib
vtksys</span>-<span>gd.lib
vtktiff</span>-<span>gd.lib
vtkverdict</span>-<span>gd.lib
vtkViews</span>-<span>gd.lib
vtkVolumeRendering</span>-<span>gd.lib
vtkWidgets</span>-<span>gd.lib
vtkzlib</span>-gd.lib
文件有点多,这里可以有个比较快的方法:这里以vtk为例,
打开CMD->进入PCL的安装目录->进入3rdPartyVTKlibvtk-5.8目录->输入命令:dir /b *gd.lib -> list.txt
命令的意思是找出gd.lib结尾的文件并保存到list.txt文档里面。然后当前目录就会生成list.txt

四、Demo
例程:
#include <pcl/visualization/cloud_viewer.h><span>
#include </span><iostream><span>
#include </span><pcl/io/io.h><span>
#include </span><pcl/io/pcd_io.h>
<span>int</span><span> user_data;
</span><span>void</span> viewerOneOff (pcl::visualization::PCLVisualizer&<span> viewer)
{
viewer.setBackgroundColor (</span><span>0</span>, <span>0</span>, <span>0</span><span>);
pcl::PointXYZ o;
o.x </span>= <span>1.0</span><span>;
o.y </span>= <span>0</span><span>;
o.z </span>= <span>0</span><span>;
viewer.addSphere (o, </span><span>0.25</span>, <span>"</span><span>sphere</span><span>"</span>, <span>0</span><span>);
std::cout </span><< <span>"</span><span>i only run once</span><span>"</span> <<<span> std::endl;
}
</span><span>void</span> viewerPsycho (pcl::visualization::PCLVisualizer&<span> viewer)
{
</span><span>static</span> unsigned count = <span>0</span><span>;
std::stringstream ss;
ss </span><< <span>"</span><span>Once per viewer loop: </span><span>"</span> << count++<span>;
viewer.removeShape (</span><span>"</span><span>text</span><span>"</span>, <span>0</span><span>);
viewer.addText (ss.str(), </span><span>200</span>, <span>300</span>, <span>"</span><span>text</span><span>"</span>, <span>0</span><span>);
</span><span>//</span><span>FIXME: possible race condition here:</span>
user_data++<span>;
}
</span><span>int</span><span> main ()
{
pcl::PointCloud</span><pcl::PointXYZRGBA>::Ptr cloud (<span>new</span> pcl::PointCloud<pcl::PointXYZRGBA><span>);
pcl::io::loadPCDFile (</span><span>"</span><span>my_point_cloud.pcd</span><span>"</span>, *<span>cloud);
pcl::visualization::CloudViewer viewer(</span><span>"</span><span>Cloud Viewer</span><span>"</span><span>);
</span><span>//</span><span>blocks until the cloud is actually rendered</span><span> viewer.showCloud(cloud);
</span><span>//</span><span>use the following functions to get access to the underlying more advanced/powerful
</span><span>//</span><span>PCLVisualizer
</span><span>//</span><span>This will only get called once</span><span> viewer.runOnVisualizationThreadOnce (viewerOneOff);
</span><span>//</span><span>This will get called once per visualization iteration</span><span> viewer.runOnVisualizationThread (viewerPsycho);
</span><span>while</span> (!<span>viewer.wasStopped ())
{
</span><span>//</span><span>you can also do cool processing here
</span><span>//</span><span>FIXME: Note that this is running in a separate thread from viewerPsycho
</span><span>//</span><span>and you should guard against race conditions yourself...</span>
user_data++<span>;
}
</span><span>return</span><span>0</span><span>;
}</span>
以上效果图是用realsense的SR300获取到我桌面的点云。
my_point_cloud.pcd 文件 链接:http://pan.baidu.com/s/1gfD2lF1 密码:cexi
五、总结分享
1、pcd读取有点慢,据说pcd数据以有序点云的方式保存会好一点,但是没我试了没看出来能快多少,这个有待研究。
2、SR300直接获取的深度图像和RGB图像坐标上有偏差,这个考虑下怎么做对齐。
3、如果工程配置上SR300的SDK和opencv,我们就不需要在另一个工程先保存pcd文件再读取,中间就可以省了很多步骤。
4、PCL的学习资料还是很少,目前听说比较好也就只有《点云库PCL学习教程》,我也买了一本,慢慢学吧。
原文:http://www.cnblogs.com/chensheng-zhou/p/7773643.html
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