使用ARUCO识别二维码获取位置信息

1、安装软件 cd ~/catkin_ws/src git clone -b kinetic-devel https://github.com/pal-robotics/aruco_ros cd … catkin_make 在编译时遇到一个错误 /home/wgq/catkin_wgq/src/aruco_ros/aruco_ros/src/simple_double.cpp: In function ‘void image_callback(const ImageConstPtr&)’: /home/wgq/catkin_wgq/src/aruco_ros/aruco_ros/src/simple_double.cpp:161:78: error: ‘CV_FILLED’ was not declared in this scope v::circle(inImage, cv::Point(u[0], v[0]), 3, cv::Scalar(0, 0, 255), CV_FILLED); ^~~~~~~~~ /home/wgq/catkin_wgq/src/aruco_ros/aruco_ros/src/simple_double.cpp:161:78: note: suggested alternative: ‘__FILE’ v::circle(inImage, cv::Point(u[0], v[0]), 3, cv::Scalar(0, 0, 255), CV_FILLED); ^~~~~~~~~ __FILE aruco_ros/aruco_ros/CMakeFiles/double.dir/build.make:62: recipe for target ‘aruco_ros/aruco_ros/CMakeFiles/double.dir/src/simple_double.cpp.o’ failed make[2]: *** [aruco_ros/aruco_ros/CMakeFiles/double.dir/src/simple_double.cpp.o] Error 1 CMakeFiles/Makefile2:2507: recipe for target ‘aruco_ros/aruco_ros/CMakeFiles/double.dir/all’ failed make[1]: *** [aruco_ros/aruco_ros/CMakeFiles/double.dir/all] Error 2 Makefile:140: recipe for target ‘all’ failed

解决方法：CV_FILLED直接-1

2、测试aruco标签 首先把launch文件里mark的ID和尺寸对应上，相机发布的主题对应上 Mark标签可以到https://chev.me/arucogen/打印 启动usb相机 roslaunch usb_cam usb_cam.launch 启动单标签 roslaunch aruco_ros single.launch launch文件里相机的主题要对应上 可以用rqt查看，如图识别出正确mark即可

3、获取位置信息 双目相机标定，已经标定好的usb相机可以直接使用 到工程src文件夹下 git clone https://github.com/ros-perception/image_pipeline.git 编译成功后即可以使用标定包，注意尺寸和点位的对应 rosrun camera_calibration cameracalibrator.py --size 8x6 --square 0.108 right:=/my_stereo/right/image_raw left:=/my_stereo/left/image_raw left_camera:=/my_stereo/left right_camera:=/my_stereo/right 可到以下地址下载标定板 http://wiki.ros.org/camera_calibration/Tutorials/MonocularCalibration?action=AttachFile&do=view&target=check-108.pdf

变换标定板位置，在相机视野的上下左右，倾斜水平，直到所有项目都为绿色条 再次运行标签识别 roslaunch aruco_ros single.launch

查看位姿.launch文件里标签ID要对应， rostopic echo /aruco_single/pose