from cv_bridge.boost.cv_bridge_boost import getCvType 又名ros python3 opencv 乱七八糟的问题之一
1. from cv_bridge.boost.cv_bridge_boost import getCvType
ImportError: dynamic module does not define module export function (PyInit_cv_bridge_boost)
原因:需要在python3下编译 cv_bridge
解决办法:
1.建立工作空间
mkdir -p catkin_workspace/src
cd catkin_workspace
2.设置python3的编译环境
catkin config -DPYTHON_EXECUTABLE=/usr/bin/python3 -DPYTHON_INCLUDE_DIR=/usr/include/python3.6m -DPYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.6m.so
(根据自己的版本修改 python 会出版本号)
3.下载cv_bridge
git clone https://github.com/ros-perception/vision_opencv.git src/vision_opencv
https://github.com/ros-perception/vision_opencv/releases/tag/1.12.8
apt-cache show ros-melodic-cv-bridge | grep Version
查看自己对应的版本
可以输入/releases 找对应版本下载,我下载的是vision_opencv-1.12.8.
放入catkin_workspace/src下,然后回到 catkin_workspace 下catkin_make
4.可能还会遇到的问题.
4.1
boost (missing python3) Found version ...
这个是缺乏python3 环境下的boost
编译boost
(1) 去boost官网 https://www.boost.org/ 下载较新版本的boost,如boost_1_58_0.zip.
(2) 解压: unzip boost_1_71_0.zip
(3) 进入boost_1_71_0, 执行如下命令:
(a) ./bootstrap.sh --with-libraries=all --with-toolset=gcc
(b) ./b2
(c) sudo ./b2 install
(d) sudo ldconfig
(4) 编译成功后可以在默认编译路径/usr/local/lib下找到相关的libboost*.so, boost在/usr/local/include/boost.
4.2解决ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'的方法
pip install --upgrade numpy
5.参考文献
!!! https://blog.csdn.net/weixin_42675603/article/details/107785376
https://blog.csdn.net/qq_44876051/article/details/112370423
boost https://blog.csdn.net/zsf10220208/article/details/102571611
numpy tensorflow不匹配 https://blog.csdn.net/lizzy05/article/details/102482464