MATLAB2013a update and mexopencv failing about mexopencv HOT 7 CLOSED

What is your OpenCV version? If you're using 2.3.x, please use the mexopencv v2.3 branch.

from mexopencv.

I'm using OpenCV version 2.4.4 and latest mexopencv

from mexopencv.

Alright, then you need to make sure your shared object is loaded in matlab as expected. Repeat the following steps to find a missing dependency.

Use ldd in unix shell.

$ ldd /home/aej/Downloads/mexopencv/+cv/private/FeatureDetector_.mexa64

Use ldd in matlab shell.

>> !ldd /home/aej/Downloads/mexopencv/+cv/private/FeatureDetector_.mexa64

Find any difference in the loaded libraries. Usually such libraries are causing error. If you find any, such as libstdc++ or libgcc_s, put them in the LD_PRELOAD variable before launching matlab.

LD_PRELOAD=/usr/lib/libstdc++.6.so matlab

If you still cannot solve this issue, I suspect your opencv installation is missing something.

from mexopencv.

Thank you.

This doesn't seem right:

From matlab !ldd:

...
libopencv_core.so.2.4 => /usr/local/MATLAB/R2013a/bin/glnxa64/libopencv_core.so.2.4 (0x00007f63ce2ac000)
libopencv_features2d.so.2.4 => /usr/local/MATLAB/R2013a/bin/glnxa64/libopencv_features2d.so.2.4 (0x00007f63ce01c000)
...

and from console ldd:

...
libopencv_core.so.2.4 => /usr/local/lib/libopencv_core.so.2.4 (0x00007f0cf327a000)
libopencv_features2d.so.2.4 => /usr/local/lib/libopencv_features2d.so.2.
...

There shouldn't be any OpenCV related stuff under MATLAB, right? Or is this copied during 'make' in mexopencv?

Thanks

from mexopencv.

Hmm, if I, for instance, preload OpenCV core and High gui, then things starts to work again. For instance cv.imread is working again.

I can't figure out why these opencv shared objects are in the matlab installation. Is it something new or have I done something wrong?

from mexopencv.

This can happen if you have the computer vision toolbox from mathworks. They internally use opencv, and therefore it gives you version conflict. Unless you link mexopencv with these mathworks-provided libraries, you should preload to avoid issues.

from mexopencv.

Thank you. That would be the reason. I will preload OpenCV libs.

from mexopencv.