add opencv to indigo

asked 2014-07-07 02:16:27 -0600

hsoltani
70 ●4 ●6 ●11

updated 2014-07-07 14:37:35 -0600

The Opencv packages aren't built in the ROS Indigo anymore. So what should I do if I want to add opencv2?

edit retag flag offensive close merge delete

add a comment

5

answered 2014-07-07 08:30:44 -0600

Stefan Kohlbrecher

24361 ●173 ●299 ●444 https://www.energy-rob...

Note that for compatibility with Hydro and general simplicity it is recommended to use cv_bridge as a dependency to pull in opencv for Indigo packages (a bit hacky though, as this pulls in other related packages). See discussion on github and Indigo migration guide on OpenCV.

edit flag offensive delete link

Comments

Given the OP asks about Indigo, I think this looks more appropriate ROS-way and should be chosen as the answer IMO.

130s ( 2014-07-09 17:30:30 -0600 )edit

add a comment

3

answered 2014-07-07 03:23:38 -0600

Mehdi.

flag of United Kingdom of Great Britain and Northern Ireland

3339 ●96 ●138 ●161 https://github.com/mehditlili

You should install opencv by yourself on your computer, the easiest way is to clone this to your computer https://github.com/jayrambhia/Install...

git clone https://github.com/jayrambhia/Install-OpenCV.git

Then run the ubuntu/opencv_install.sh

Now in your ros package:

In the manifest.xml add this line

<rosdep name="opencv2"/>

you also need to include these lines in your CMakeFiles.txt

find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})

and

target_link_libraries(your_cpp_node ${OpenCV_LIBS})

for linking the libraries to the nodes written in c++.

edit flag offensive delete link

Comments

Thanks for your reply. I do the same and add the lines except the last line (target_link_libraries) since the package is written in python. The package is built correctly but I get following error when using roslaunch for running it: cv_image = self.bridge.imgmsg_to_cv(data, "bgr8") AttributeError: CvBridge instance has no attribute 'imgmsg_to_cv'

hsoltani ( 2014-07-07 04:32:08 -0600 )edit

This is not the right way to do it -- the opencv2 rosdep will slowly be going away, replaced by the libopencv-dev rosdep which uses the system OpenCV rather than the one built for ROS. On ubuntu, all you should have to do is "sudo apt-get install libopencv-dev".