nihui
Adding calib3d module from sources
Hi All,
I am trying to recompile opencv-mobile by adding some missing modules. The module I need is calib3d so I added changed the following lines in options.txt:
-DBUILD_opencv_calib3d=ON
-DBUILD_opencv_flann=ON
But when I compile it with the recommended call
cmake -DCMAKE_INSTALL_PREFIX=install -DCMAKE_BUILD_TYPE=Debug `cat ../options.txt` -DBUILD_opencv_world=OFF ..
make -j8
I get the following compilation error:
[ 76%] Linking CXX static library ../../lib/libopencv_highgui.a
[ 76%] Built target opencv_highgui
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp: In member function ‘virtual void cv::FlannBasedMatcher::add(cv::InputArrayOfArrays)’:
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1061:22: error: ‘const class cv::_InputArray’ has no member named ‘isUMatVector’; did you mean ‘isMatVector’?
1061 | if( _descriptors.isUMatVector() )
| ^~~~~~~~~~~~
| isMatVector
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1063:21: error: ‘UMat’ was not declared in this scope; did you mean ‘Mat’?
1063 | std::vector<UMat> descriptors;
| ^~~~
| Mat
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1063:25: error: template argument 1 is invalid
1063 | std::vector<UMat> descriptors;
| ^
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1063:25: error: template argument 2 is invalid
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1064:22: error: ‘const class cv::_InputArray’ has no member named ‘getUMatVector’; did you mean ‘getMatVector’?
1064 | _descriptors.getUMatVector( descriptors );
| ^~~~~~~~~~~~~
| getMatVector
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1066:44: error: request for member ‘size’ in ‘descriptors’, which is of non-class type ‘int’
1066 | for( size_t i = 0; i < descriptors.size(); i++ )
| ^~~~
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1068:42: error: invalid types ‘int[size_t {aka long unsigned int}]’ for array subscript
1068 | addedDescCount += descriptors[i].rows;
| ^
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1071:27: error: ‘const class cv::_InputArray’ has no member named ‘isUMat’; did you mean ‘isMat’?
1071 | else if( _descriptors.isUMat() )
| ^~~~~~
| isMat
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1073:40: error: ‘const class cv::_InputArray’ has no member named ‘getUMat’; did you mean ‘getMat’?
1073 | addedDescCount += _descriptors.getUMat().rows;
| ^~~~~~~
| getMat
In file included from /home/zed/repos/opencv-mobile-4.10.0/modules/core/include/opencv2/core.hpp:53,
from /home/zed/repos/opencv-mobile-4.10.0/modules/features2d/include/opencv2/features2d.hpp:47,
from /home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/precomp.hpp:46,
from /home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:42:
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1090:33: error: ‘const class cv::_InputArray’ has no member named ‘isUMat’; did you mean ‘isMat’?
1090 | CV_Assert( _descriptors.isUMat() || _descriptors.isUMatVector() || _descriptors.isMat() || _descriptors.isMatVector() );
| ^~~~~~
/home/zed/repos/opencv-mobile-4.10.0/modules/core/include/opencv2/core/base.hpp:342:38: note: in definition of macro ‘CV_Assert’
342 | #define CV_Assert( expr ) do { if(!!(expr)) ; else cv::error( cv::Error::StsAssert, #expr, CV_Func, __FILE__, __LINE__ ); } while(0)
| ^~~~
/home/zed/repos/opencv-mobile-4.10.0/modules/features2d/src/matchers.cpp:1090:58: error: ‘const class cv::_InputArray’ has no member named ‘isUMatVector’; did you mean ‘isMatVector’?
1090 | CV_Assert( _descriptors.isUMat() || _descriptors.isUMatVector() || _descriptors.isMat() || _descriptors.isMatVector() );
| ^~~~~~~~~~~~
/home/zed/repos/opencv-mobile-4.10.0/modules/core/include/opencv2/core/base.hpp:342:38: note: in definition of macro ‘CV_Assert’
342 | #define CV_Assert( expr ) do { if(!!(expr)) ; else cv::error( cv::Error::StsAssert, #expr, CV_Func, __FILE__, __LINE__ ); } while(0)
| ^~~~
make[2]: *** [modules/features2d/CMakeFiles/opencv_features2d.dir/build.make:370: modules/features2d/CMakeFiles/opencv_features2d.dir/src/matchers.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
[ 76%] Linking CXX static library ../../lib/libopencv_photo.a
[ 76%] Built target opencv_photo
make[1]: *** [CMakeFiles/Makefile2:742: modules/features2d/CMakeFiles/opencv_features2d.dir/all] Error 2
make: *** [Makefile:166: all] Error 2
Any idea on how to get pass these errors? When I don't try to add calib3d it does compile without errors.
Thanks for your help
Pushing this, since I'm running into the same issue and this is quite an important issue for us. Any help would be appreciated!
@TorstenK91, eventually I did not have time to spend trying to make calib3d compile with opencv-mobile, so I ended up compiling the official opencv repo but for Android. The compiled library is bigger, but that is acceptable for what I am doing.
Good luck
Ran into a similar issue, for ios builds with -DBUILD_opencv_calib3d=ON -DBUILD_opencv_flann=ON and -DWITH_OPENCL=ON got the error: use of undeclared identifier 'ocl'. Any inputs on dependencies related to OPENCL?
You just need to replace all instances of UMat with Mat, and then add the compile option -fopenmp.
