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@@ -61,7 +61,7 @@ This section shows how to install RTAB-Map ros-pkg on **ROS Hydro/Indigo/Jade/Ki
* On Indigo/Jade, I recommend to use latest 2.4 version ([2.4.11](https://github.com/Itseez/opencv/archive/2.4.11.zip)) and build it from source following these [instructions](http://docs.opencv.org/doc/tutorials/introduction/linux_install/linux_install.html#building-opencv-from-source-using-cmake-using-the-command-line). RTAB-Map can build with OpenCV3+[xfeatures2d](https://github.com/Itseez/opencv_contrib/tree/master/modules/xfeatures2d) module, but rtabmap_ros package will have libraries conflict as cv-bridge is depending on OpenCV2. If you want OpenCV3, you should build ros [vision-opencv](https://github.com/ros-perception/vision_opencv) package yourself (and all ros packages depending on it) so it can link on OpenCV3.
* On Kinetic/Lunar, I recommend to use OpenCV3+[xfeatures2d](https://github.com/Itseez/opencv_contrib/tree/master/modules/xfeatures2d) module already installed by ROS. You can also install OpenCV2, but rtabmap_ros package will have libraries conflict as cv-bridge is depending on OpenCV3. Thus if you want OpenCV2 on Kinetic/Lunar, you should build ros [vision-opencv](https://github.com/ros-perception/vision_opencv) package yourself (and all ros packages depending on it) so it can link on OpenCV2.
* `ros-kinetic-libg2o`: [This g2o version](https://github.com/felixendres/g2o/tree/c++03) (c++03 branch) built from source may be faster than the binaries (install `libsuitesparse-dev` before building `g2o`) and would be [required to avoid some crashes](http://official-rtab-map-forum.67519.x6.nabble.com/ROS-2D-occupancy-grid-tp1204p1215.html). RTAB-Map won't build with latest official g2o version from source (since this [commit](https://github.com/RainerKuemmerle/g2o/commit/78280034b1983399cad3f93974b05b823ee20c25)).
* g2o: Use directly the binaries `ros-kinetic-libg2o`. However, [this g2o version](https://github.com/felixendres/g2o/tree/c++03) (c++03 branch) built from source may be faster than the binaries (install `libsuitesparse-dev` before building `g2o`) and would be [required to avoid some crashes](http://official-rtab-map-forum.67519.x6.nabble.com/ROS-2D-occupancy-grid-tp1204p1215.html). To build RTAB-Map against [latest official g2o version](https://github.com/RainerKuemmerle/g2o) built from source, g2o should be built with `-DBUILD_WITH_MARCH_NATIVE=OFF` to avoid some segmentation faults caused by Eigen.
* [GTSAM](https://collab.cc.gatech.edu/borg/gtsam): Follow installation instructions from [here](https://collab.cc.gatech.edu/borg/gtsam/#quickstart). RTAB-Map needs latest version from source, it will **not build** with 3.2.1. Set cmake variable `GTSAM_USE_SYSTEM_EIGEN=ON` to make sure the same Eigen version is used across all dependencies to avoid crashes.
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