在ROS中运行OpenCV代码-错误：未在此范围内声明“ DescriptorMatcher”

Question

我已经在计算机上安装了OpenCV和opencv_bridge。我正在尝试在ROS软件包中使用此脚本：

https://github.com/spillai/recognition-utils/blob/master/FLAIR/flair.hpp

问题在于，当我将其包含在文件中时（如下所示）：

#include "opencv2/core/version.hpp"
#include "flair.hpp"

我收到此错误：

/home/osboxes/catkin_ws/src/cipek/src/flair.hpp:71:11: error: ‘DescriptorMatcher’ was not declared in this scope
   cv::Ptr<DescriptorMatcher> _matcher;

此错误后面还有很多错误，但是我不想把所有错误都放在这里，因为它很长，除非有人需要它。我还没有修改GitHub存储库中的文件。如何解决此问题？

编辑

添加后：

#include "opencv2/core.hpp"
#include "opencv2/features2d.hpp"

对于flair.hpp文件，出现此错误：

In file included from /usr/local/include/opencv2/core.hpp:52:0,
             from /home/osboxes/catkin_ws/src/cipek/src/flair.hpp:23,
             from /home/osboxes/catkin_ws/src/cipek/src/ardrone_test_CPP.cpp:8:
/usr/local/include/opencv2/core/cvdef.h:234:15: error: redefinition of ‘union Cv32suf’
 typedef union Cv32suf