本文是在Ubuntu14.04中运行LSDSLAM的步骤以及出现的一系列问题的解决，最终可以运行数据集和实时运行
基本环境：Ubuntu14.04 opencv3.1.0 但是有问题，因此后来又安装了opencv2.4.9。感谢大佬。
前序的工作和该博主完全一致：
https://blog.csdn.net/softimite_zifeng/article/details/78632506
出现的问题：
已解决：raise Exception(r"""quotes not allowed in description string '%s'""" % description)
不应该在描述中出现引号（单引号或双引号），可以通过查看错误内容得知需要修改的文件名： 1) lsd_slam_viewer/cfg/LSDSLAMViewerParams.cfg 第20行scaledDepthVarTH：单词 point's和keyframe's 中出现了单引号，删除单引号 第21行absDepthVarTH：单词 point's 第24行cutFirstNKf：单词 keyframe's 2) lsd_slam_core/cfg/LSDDebugParams.cfg 第11行plotStereoImages：单词 what's 第12行plotTracking：单词 what's 第48行continuousPCOutput：单词 Keyfram's
之后，
出现新的问题：
main_stitchVideos.cpp:(.text+0x8f30): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0x8fc9): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0x8fdb): undefined reference to `cv::String::deallocate()'
CMakeFiles/videoStitch.dir/src/main_stitchVideos.cpp.o: In function `inlayVid(int, char**)':
main_stitchVideos.cpp:(.text+0x9c62): undefined reference to `cv::imread(cv::String const&, int)'
main_stitchVideos.cpp:(.text+0x9c6a): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0x9cb3): undefined reference to `cv::imread(cv::String const&, int)'
main_stitchVideos.cpp:(.text+0x9cbd): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0x9d02): undefined reference to `cv::imread(cv::String const&, int)'
main_stitchVideos.cpp:(.text+0x9d0c): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0x9d5a): undefined reference to `cv::imread(cv::String const&, int)'
main_stitchVideos.cpp:(.text+0x9d67): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0x9db1): undefined reference to `cv::imread(cv::String const&, int)'
main_stitchVideos.cpp:(.text+0x9dbe): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xa629): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xa654): undefined reference to `cv::imwrite(cv::String const&, cv::_InputArray const&, std::vector<int, std::allocator<int> > const&)'
main_stitchVideos.cpp:(.text+0xa661): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xa6c6): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xa6e7): undefined reference to `cv::imshow(cv::String const&, cv::_InputArray const&)'
main_stitchVideos.cpp:(.text+0xa6f4): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xaec5): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xaee8): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xaf08): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xaf28): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xaf46): undefined reference to `cv::String::allocate(unsigned long)'
main_stitchVideos.cpp:(.text+0xb146): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xb1e2): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xb20e): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xb23f): undefined reference to `cv::String::deallocate()'
main_stitchVideos.cpp:(.text+0xb270): undefined reference to `cv::String::deallocate()'
CMakeFiles/videoStitch.dir/src/main_stitchVideos.cpp.o:main_stitchVideos.cpp:(.text+0xb33e): more undefined references to `cv::String::deallocate()' follow
collect2: error: ld returned 1 exit status
make[3]: *** [../bin/videoStitch] Error 1
make[3]: Leaving directory `/home/zc/rosbuild_ws/package_dir/lsd_slam/lsd_slam_viewer/build'
make[2]: *** [CMakeFiles/videoStitch.dir/all] Error 2
make[2]: Leaving directory `/home/zc/rosbuild_ws/package_dir/lsd_slam/lsd_slam_viewer/build'
make[1]: *** [all] Error 2
make[1]: INTERNAL: Exiting with 3 jobserver tokens available; should be 2!
make[1]: Leaving directory `/home/zc/rosbuild_ws/package_dir/lsd_slam/lsd_slam_viewer/build'
-------------------------------------------------------------------------------}
好像是因为opencv版本的问题，
pkg-config --modversion opencv
查看后发现是3.1.0
想办法解决。
找到了：
https://www.cnblogs.com/cc111/p/9382694.html
解决： 在lsd_slam_viewer中的CMAKELISTS.txt的最后加上： find_package(OpenCV REQUIRED) rosbuild_add_executable(videoStitch src/main_stitchVideos.cpp) target_link_libraries(videoStitch ${OpenCV_LIBS})
接着还有一个报错，是在lsd_slam_core路径中的错误：
解决：在lsd_slam_core中的CMAKELISTS.txt的最后增加boost_system库的链接： find_package(OpenCV REQUIRED) # build live ros node rosbuild_add_executable(live_slam src/main_live_odometry.cpp) target_link_libraries(live_slam lsdslam boost_system ${OpenCV_LIBS}) # build image node rosbuild_add_executable(dataset_slam src/main_on_images.cpp) target_link_libraries(dataset_slam lsdslam boost_system ${OpenCV_LIBS})
然后还有一个错误：
/usr/bin/ld: cannot find -lglut
解决方法：我的是so.3 使用命令 locate libglut 找到的
ln -sv libglut.so.3 libglut.so
https://zh-ka-163-com.iteye.com/blog/2214601
使用数据集来跑
参考：
https://blog.csdn.net/softimite_zifeng/article/details/78632506
（1）下载数据集
（2）roscore
（3）rosrun lsd_slam_viewer viewer
（4）rosrun lsd_slam_core live_slam image:=/image_raw camera_info:=/camera_info
（5）rosbag play dataset/LSD_room.bag
将上述命令中的dataset/LSD_room.bag替换为你之前下载的数据集的所在的路径
然后出现问题：
zc@ubuntu:~ $ rosrun lsd_slam_core live_slam image:=/image_raw camera_info:=/camera_info
WAITING for ROS camera calibration!
Received ROS Camera Calibration: fx: 254.326950, fy: 375.934387, cx: 267.381897, cy: 231.599091 @ 640x480
RECEIVED ROS camera calibration!
Started mapping thread!
Doing Random initialization!
Started constraint search thread!
Started optimization thread
Segmentation fault (core dumped)
需要做的是到目录
lsd_slam/lsd_slam_core/src/util/settings.cpp
把其中的
bool displayDepthMap = true;
改成
//bool displayDepthMap = true; bool displayDepthMap = false;
这一步就是把debugdepth的那个界面不显示。
点云图正常显示。
然后就会出现新的问题：
rosrun lsd_slam_core live_slam image:=/image_raw camera_info:=/camera_info
WAITING for ROS camera calibration!
Received ROS Camera Calibration: fx: 254.326950, fy: 375.934387, cx: 267.381897, cy: 231.599091 @ 640x480
RECEIVED ROS camera calibration!
Doing Random initialization!
Started mapping thread!
Started constraint search thread!
Started optimization thread
Done Random initialization!
TRACKING LOST for frame 50 (0.00% good Points, which is 18.18% of available points, DIVERGED)!
warning: reciprocal tracking on new frame failed badly, added odometry edge (Hacky).
图片有显示，
如果这个时候运行实时的命令，那么将会在优化线程的一步卡死。
最后发现是opencv的版本问题，一开始用的是opencv3.1.0，最后修改成2.4.9解决问题，参考如下：
然后这边对于opencv的解决方法： https://www.cnblogs.com/hxzkh/p/8488132.html LSDSLAM https://www.cnblogs.com/hxzkh/p/8473190.html ORBSLAM 中的opencv解决 参考解决方法： https://answers.ros.org/question/219063/segmentation-fault-in-lsd_slam/ https://blog.csdn.net/osgoodwu/article/details/79900620 github上哟一个： https://github.com/tum-vision/lsd_slam/issues/30
最后这个问题发现其实是opencv版本的问题，我的是3.1.0，之后又安装了一个2.4.9的opencv，然后就可以了：
https://www.cnblogs.com/1228073191Blog/p/10927384.html
安装一个opencv2.4.9
然后更改：
然后编辑 lsd_slam_core 下的 CMakeLists.txt 文件，11行左右添加： set(OpenCV_DIR ~/opencv-2.4.9/share/OpenCV) include_directories(~/opencv-2.4.9/include) find_package(cmake_modules REQUIRED)
然后编辑 lsd_slam_viewer 下的 CMakeLists.txt 文件，11行左右添加： set(OpenCV_DIR ~/opencv-2.4.9/share/OpenCV) include_directories(~/opencv-2.4.9/include) find_package(cmake_modules REQUIRED)
就可以运行数据集了。
实时跑起来：
https://blog.csdn.net/buptwbs/article/details/52460758
（1）启动摄像头相关参考，主要是安装usb_cam
https://blog.csdn.net/qq_25241325/article/details/82705003
http://www.wh-robot.com/whb/?p=1232
1. roscore 2. rosrun lsd_slam_viewer viewer 3. rosrun usb_cam usb_cam_node 4. rosrun image_view image_view image:=/usb_cam/image_raw 5. rosrun lsd_slam_core live_slam /image:=/usb_cam/image_raw _calib:=/home/zhangchi/Desktop/LSDSlamDataset/LSD_room/cameraCalibration.cfg
其中的calib的路径偷懒直接使用了数据集中的