基于Ubuntu14.04 LSD_SLAM的indigo数据集测试
LSD-SLAM是一个实时的单目SLAM. 它能实时地在电脑上直接(不使用关键点和特征)创建大规模的半稠密地图，甚至可以运行在智能手机上，如Android/iOS.
搭建Ubuntu ROS indigo环境
Ubuntu安装
下载ubuntu-14.04.4-desktop-i386.iso安装包，大约1G.
备注：因为ROS包含rviz可视化环境，因此需要选择桌面版。
将安装源换成阿里云的，如何换请参考
http://mirrors.aliyun.com/help/ubuntu
备注：强烈建议将安装源换成国内的，否则安装的时候要么速度慢，要么可能连不上。
在Ubuntu14.04.4中安装ROS indigo，参考
http://wiki.ros.org/indigo/Installation/Ubuntu
dennis@ubuntu:~$ sudo apt-get update
dennis@ubuntu:~$ sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
dennis@ubuntu:~$ sudo apt-key adv --keyserver hkp://ha.pool.sks-keyservers.net --recv-key 0xB01FA116
dennis@ubuntu:~$ sudo apt-get update
dennis@ubuntu:~$ sudo apt-get install ros-indigo-desktop-full备注：这里采用的完整安装模式.
dennis@ubuntu:~$ sudo rosdep init
dennis@ubuntu:~$ rosdep updatedennis@ubuntu:~$ echo "source /opt/ros/indigo/setup.bash" >> ~/.bashrc
dennis@ubuntu:~$ source ~/.bashrc校验安装是否成功，输入roscore命令，如下：
dennis@ubuntu:~$ roscore
... logging to /home/dennis/.ros/log/9f2ace00-16b9-11e6-a10c-000c29b0df82/roslaunch-ubuntu-2078.log
Checking log directory for disk usage. This may take awhile. Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://ubuntu:44364/
ros_comm version 1.11.19
SUMMARY
PARAMETERS
* /rosdistro: indigo
* /rosversion: 1.11.19
NODES
auto-starting new master
process[master]: started with pid [2090]
ROS_MASTER_URI=http://ubuntu:11311/
setting /run_id to 9f2ace00-16b9-11e6-a10c-000c29b0df82
process[rosout-1]: started with pid [2103]
started core service [/rosout]安装ROS工具
dennis@ubuntu:~$ sudo apt-get install python-rosinstall初始化ros编译环境及编译lsd_slam
dennis@ubuntu:~$ mkdir ~/rosbuild_ws
dennis@ubuntu:~$ cd ~/rosbuild_ws/
dennis@ubuntu:~/rosbuild_ws$ rosws init . /opt/ros/indigo
dennis@ubuntu:~/rosbuild_ws$ mkdir package_dir
dennis@ubuntu:~/rosbuild_ws$ rosws set ~/rosbuild_ws/package_dir -t .
dennis@ubuntu:~/rosbuild_ws$ echo "source ~/rosbuild_ws/setup.bash" >> ~/.bashrc
dennis@ubuntu:~/rosbuild_ws$ bash
dennis@ubuntu:~/rosbuild_ws$ cd package_dir/
dennis@ubuntu:~/rosbuild_ws/package_dir$
dennis@ubuntu:~/rosbuild_ws/package_dir$ sudo apt-get install ros-indigo-libg2o ros-indigo-cv-bridge
liblapack-dev libblas-dev freeglut3-dev libqglviewer-dev libsuitesparse-dev libx11-dev
dennis@ubuntu:~/rosbuild_ws/package_dir$ git clone https://github.com/tum-vision/lsd_slam.git lsd_slam
dennis@ubuntu:~/rosbuild_ws/package_dir$ ls -lrt
total 4
drwxrwxr-x 5 dennis dennis 4096 May 8 03:30 lsd_slam
dennis@ubuntu:~/rosbuild_ws/package_dir$ rosmake lsd_slam采用官方提供的数据集进行测试
备注：数据集下载请参考本文的参考资料[2].
测试方法一(采用官方数据集LSD_foodcourt的images)
winter@winter-PC:~$ roscore //执行后新建终端
winter@winter-PC:~$ rosrun lsd_slam_viewer viewer //执行后再新建终端
winter@winter-PC:~$ rosrun lsd_slam_core dataset_slam _files:=/home/winter/LSD_DataSet/LSD_foodcourt/images _hz:=0 _calib:=/home/winter/LSD_DataSet/LSD_foodcourt/cameraCalibration.cfg SLAM Depth
SLAM Viewer
测试方法二(采用官方数据集LSD_room.bag文件)
winter@winter-PC:~$ roscore
winter@winter-PC:~$ rosrun lsd_slam_viewer viewer
winter@winter-PC:~$ rosrun lsd_slam_core live_slam image:=/image_raw camera_info:=/camera_info
winter@winter-PC:~$ rosbag play LSD_room.bagSLAM Depth
SLAM Viewer
参考资料
[1] https://github.com/tum-vision/lsd_slam LSD_SLAM官网
[2] http://vision.in.tum.de/research/vslam/lsdslam 德国慕尼黑工业大学(TUM)计算机视觉组
[3] http://wiki.ros.org/indigo/Installation/Ubuntu 在Ubuntu14.04.4上安装ROS Indigo
[4] http://releases.ubuntu.com/14.04/ 官网下载ubuntu-14.04.4-desktop-i386.iso
[5] http://wiki.ros.org/ROS/Tutorials 用于ROS安装成功之后的测试
[6] http://www.dev47apps.com/droidcam/linuxx/ 将手机摄像头的视频传输到电脑上的工具