solivr/cython_opencvmat

Cython wrapper for cv::Mat class

cython_opencvmat's Issues

Cannot compile with Ubuntu 20.04, OpenCV 4.2.0 and Python 3.8.0

Hi @solivr,

Have you had a chance to test the compilation of the cython wrapper with Ubuntu 20.04? Following your instructions, I tried to compile it but it fails.

Here is the console output

icore_base@icore-nitro5:~/Documents/semantic_single_agent/cython_lib/cython_opencvMat$ python3 setup.py build_ext --inplace
running build_ext
x86_64-linux-gnu-gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -fPIC -I/home/icore_base/.local/lib/python3.8/site-packages/numpy/core/include -I/usr/local/include -I/usr/include/python3.8 -c opencv_mat.cpp -o build/temp.linux-x86_64-3.8/opencv_mat.o
In file included from /home/icore_base/.local/lib/python3.8/site-packages/numpy/core/include/numpy/ndarraytypes.h:1960,
                 from /home/icore_base/.local/lib/python3.8/site-packages/numpy/core/include/numpy/ndarrayobject.h:12,
                 from /home/icore_base/.local/lib/python3.8/site-packages/numpy/core/include/numpy/arrayobject.h:5,
                 from opencv_mat.cpp:642:
/home/icore_base/.local/lib/python3.8/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:17:2: warning: #warning "Using deprecated NumPy API, disable it with " "#define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp]
   17 | #warning "Using deprecated NumPy API, disable it with " \
      |  ^~~~~~~
opencv_mat.cpp:650:10: fatal error: core/core.hpp: No such file or directory
  650 | #include "core/core.hpp"
      |          ^~~~~~~~~~~~~~~
compilation terminated.
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1

Any help in solving the compilation issue will be highly appreciated.

Segmentation fault error when import

Hello, when import this module into my project I encountered "Segmentation fault (core dumped)". Would you please help me look into this problem?

The system is Ubuntu 16.04. Build with Python 3.6, Cython 0.29 and OpenCV 3.2.

Thank you!

maybe a little Problem with types

Hey,
nice solution. Thank you.
There seems to be a problem in sizeof(CV_8UC3) when converting Mat. Since CV_8UC3 is type int it seems not to change its value when changed to CV_64FC3 for example.