error while loading shared libraries: libopencv_calib3d3.so.3.2: cannot open shared object file

asked 2018-08-12 09:47:06 -0500

DGCHAO
3 ●1 ●1 ●3

updated 2018-08-12 13:56:33 -0500

gvdhoorn
86574 ●283 ●1432 ●1054 http://cor.tudelft.nl/

I see libopencv_calib3d.so, libopencv_calib3d.so.3.3, and libopencv_calib3d.so.3.3.1, but not what I need libopencv_calib3d.so.3.2 . I have tried several methods, update ubuntu, create a 3.2 to 3.3 soft connection, and modify ld.so.conf.My OpenCV version is 3.1, ubuntu 16.04 and kinetic.

process[republish-1]: started with pid [3405]
process[camera/image_proc-2]: started with pid [3406]
/opt/ros/kinetic/lib/image_proc/image_proc: error while loading shared libraries: libopencv_calib3d3.so.3.2: cannot open shared object file: No such file or directory
[camera/image_proc-2] process has died [pid 3406, exit code 127, cmd /opt/ros/kinetic/lib/image_proc/image_proc _approximate_sync:=true image_raw:=image __name:=image_proc __log:=/home/burger/.ros/log/ccdd3c4e-9ba4-11e8-9c4b-000c29da7948/camera-image_proc-2.log].
log file: /home/burger/.ros/log/ccdd3c4e-9ba4-11e8-9c4b-000c29da7948/camera-image_proc-2*.log

answered 2018-08-12 18:51:09 -0500

PeteBlackerThe3rd

flag of United Kingdom of Great Britain and Northern Ireland

9529 ●30 ●143 ●135 https://www.linkedin.c...

I've had issues where libraries have been linked to over specific versions of the shared objects. There is a simple but slightly messy fix. You can create a symlink from libopencv_calib3d.so.3.3 to libopencv_calib3d.so.3.2 you may have to repeat this for quite a few of the openCV shared objects but I've always managed to get things working using this method.

Hope this helps.

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Thank you for your answer I have try ln -s libopencv_calib3d3.so.3.3 libopencv_calib3d3.so.3.2sudo ldconfig And I use the ls -l command to see the links that have been created.But the error has not changed

DGCHAO ( 2018-08-13 01:27:49 -0500 )edit

Is it exactly the same error message? I'd expect it to fail now with a different openCV .so file with a very similar name.

PeteBlackerThe3rd ( 2018-08-13 02:04:53 -0500 )edit

It’s exactly the same error message, it doesn't seem to have any effect.There may be other reasons for this error.

DGCHAO ( 2018-08-13 02:20:07 -0500 )edit

I installed two OpenCV versions, one is 2.4.9 and the other is 3.3.1. Will it be the reason for this?

DGCHAO ( 2018-08-13 02:23:09 -0500 )edit

It looks like it's a problem with the library paths in this case. Have you got a build dependency on openCV3 on your package.xml file and the correct dependency set in CMakeLists.txt?

PeteBlackerThe3rd ( 2018-08-13 04:48:11 -0500 )edit

I find the dependency on package.xml .<exec_depend>python-opencv</exec_depend>.But when I view the dynamic link library through the burger@burger:/opt/ros/kinetic/lib/arm-linux-gnueabihf$ ldd libopencv_calib3d3.so.3.3 It won't show about libopencv_calib3d3.so.

DGCHAO ( 2018-08-13 21:30:39 -0500 )edit

It seems to be able to use some libraries in OpenCV3, of course not including libopencv_calib3d3.so.

DGCHAO ( 2018-08-13 21:34:31 -0500 )edit

That's strange.When I verify withpkg-config --modversion opencv which shows 2.4.9 version .But when verify withpython -c "import cv2 :print cv2__version__"which shows 3.3.1 version.

DGCHAO ( 2018-08-14 01:52:28 -0500 )edit

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