这里不再赘述，安装的路径随意，只要记住这个build文件所在路径就可。
2.修改工作空间的Cmakelist添加以下的语句（实际路径要换为自己电脑的路径）
set(OpenCV_DIR "/home/jozenlee/opencv-4.5.0/build")
位置如下
# toplevel CMakeLists.txt for a catkin workspace
# catkin/cmake/toplevel.cmake
cmake_minimum_required(VERSION 3.0.2)
project(Project)
set(CATKIN_TOPLEVEL TRUE)
set(OpenCV_DIR "/home/jozenlee/opencv-4.5.0/build")
# search for catkin within the workspace
set(_cmd "catkin_find_pkg" "catkin" "${CMAKE_SOURCE_DIR}")
3.修改功能包的Cmakelist
find_package(OpenCV 4.5.0 REQUIRED)
#添加OpenCV头文件
include_directories(${OpenCV_INCLUDE_DIRS})
# 语法：add_executable( 程序名 源代码文件 ）
add_executable( test src/vision.cpp )
# 将库文件链接到可执行程序上
target_link_libraries(test ${OpenCV_LIBS})
target_link_libraries(test ${catkin_LIBRARIES})
- 然后就可以catkin_make了，大概率会有cv版本冲突的警告，可以不用理会。
