OpenCV riferimenti indefiniti

Question

sto cercando di collegare la mia applicazione JNI Android con OpenCV ma ottengo questi errori

./obj/local/armeabi 
/libopencv_calib3d.a(calibinit.cpp.o): In function `cvDrawChessboardCorners': 
calibinit.cpp:(.text+0x20a): undefined reference to `cvLine' 
calibinit.cpp:(.text+0x244): undefined reference to `cvLine' 
calibinit.cpp:(.text+0x26e): undefined reference to `cvCircle' 
calibinit.cpp:(.text+0x2ec): undefined reference to `cvLine' 
calibinit.cpp:(.text+0x4ce): undefined reference to `cvLine' 
calibinit.cpp:(.text+0x504): undefined reference to `cvLine' 
calibinit.cpp:(.text+0x532): undefined reference to `cvCircle' 
./obj/local/armeabi/libopencv_calib3d.a(calibinit.cpp.o): In function `cvFindChessboardCorners': 
calibinit.cpp:(.text+0x1b6a): undefined reference to `cvRectangle' 
./obj/local/armeabi/libopencv_calib3d.a(calibinit.cpp.o): In function `cv::findCirclesGrid(cv::_InputArray const&, cv::Size_<int>, cv::_OutputArray const&, int, cv::Ptr<cv::FeatureDetector> const&)': 
calibinit.cpp:(.text+0x5058): undefined reference to `cv::FeatureDetector::detect(cv::Mat const&, std::vector<cv::KeyPoint, std::allocator<cv::KeyPoint> >&, cv::Mat const&) const' 
./obj/local/armeabi/libopencv_calib3d.a(circlesgrid.cpp.o): In function `cv::findCirclesGridDefault(cv::_InputArray const&, cv::Size_<int>, cv::_OutputArray const&, int)': 
circlesgrid.cpp:(.text+0x2ce): undefined reference to `cv::SimpleBlobDetector::Params::Params()' 
circlesgrid.cpp:(.text+0x2dc): undefined reference to `cv::SimpleBlobDetector::SimpleBlobDetector(cv::SimpleBlobDetector::Params const&)' 
./obj/local/armeabi/libopencv_calib3d.a(circlesgrid.cpp.o): In function `CirclesGridFinder::drawHoles(cv::Mat const&, cv::Mat&) const': 
circlesgrid.cpp:(.text+0xa56): undefined reference to `cv::line(cv::Mat&, cv::Point_<int>, cv::Point_<int>, cv::Scalar_<double> const&, int, int, int)' 
circlesgrid.cpp:(.text+0xafa): undefined reference to `cv::line(cv::Mat&, cv::Point_<int>, cv::Point_<int>, cv::Scalar_<double> const&, int, int, int)' 
circlesgrid.cpp:(.text+0xb44): undefined reference to `cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' 
./obj/local/armeabi/libopencv_calib3d.a(circlesgrid.cpp.o): In function `CirclesGridFinder::drawBasis(std::vector<cv::Point_<float>, std::allocator<cv::Point_<float> > > const&, cv::Point_<float>, cv::Mat&) const': 
circlesgrid.cpp:(.text+0x106c): undefined reference to `cv::line(cv::Mat&, cv::Point_<int>, cv::Point_<int>, cv::Scalar_<double> const&, int, int, int)' 
./obj/local/armeabi/libopencv_calib3d.a(circlesgrid.cpp.o): In function `CirclesGridFinder::drawBasisGraphs(std::vector<Graph, std::allocator<Graph> > const&, cv::Mat&, bool, bool) const': 
circlesgrid.cpp:(.text+0x133c): undefined reference to `cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' 
circlesgrid.cpp:(.text+0x13bc): undefined reference to `cv::line(cv::Mat&, cv::Point_<int>, cv::Point_<int>, cv::Scalar_<double> const&, int, int, int)' 
./obj/local/armeabi/libopencv_calib3d.a(circlesgrid.cpp.o): In function `CirclesGridClusterFinder::parsePatternPoints(std::vector<cv::Point_<float>, std::allocator<cv::Point_<float> > > const&, std::vector<cv::Point_<float>, std::allocator<cv::Point_<float> > > const&, std::vector<cv::Point_<float>, std::allocator<cv::Point_<float> > >&)': 
circlesgrid.cpp:(.text+0x3292): undefined reference to `cv::flann::LinearIndexParams::LinearIndexParams()' 
circlesgrid.cpp:(.text+0x32c6): undefined reference to `cv::flann::Index::Index(cv::_InputArray const&, cv::flann::IndexParams const&, cvflann::flann_distance_t)' 
circlesgrid.cpp:(.text+0x346a): undefined reference to `cv::flann::SearchParams::SearchParams(int, float, bool)' 
circlesgrid.cpp:(.text+0x347e): undefined reference to `cv::flann::Index::knnSearch(cv::_InputArray const&, cv::_OutputArray const&, cv::_OutputArray const&, int, cv::flann::SearchParams const&)' 
circlesgrid.cpp:(.text+0x3484): undefined reference to `cv::flann::IndexParams::~IndexParams()' 
circlesgrid.cpp:(.text+0x3658): undefined reference to `cv::flann::Index::~Index()' 
circlesgrid.cpp:(.text+0x365e): undefined reference to `cv::flann::IndexParams::~IndexParams()' 
circlesgrid.cpp:(.text+0x36b6): undefined reference to `cv::flann::Index::~Index()' 
circlesgrid.cpp:(.text+0x36bc): undefined reference to `cv::flann::IndexParams::~IndexParams()' 
circlesgrid.cpp:(.text+0x3702): undefined reference to `cv::flann::IndexParams::~IndexParams()' 
circlesgrid.cpp:(.text+0x370c): undefined reference to `cv::flann::Index::~Index()' 
./obj/local/armeabi/libopencv_calib3d.a(circlesgrid.cpp.o): In function `CirclesGridFinder::computeRNG(Graph&, std::vector<cv::Point_<float>, std::allocator<cv::Point_<float> > >&, cv::Mat*) const': 
circlesgrid.cpp:(.text+0x4b2a): undefined reference to `cv::line(cv::Mat&, cv::Point_<int>, cv::Point_<int>, cv::Scalar_<double> const&, int, int, int)' 
circlesgrid.cpp:(.text+0x4b7e): undefined reference to `cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' 
circlesgrid.cpp:(.text+0x4bd4): undefined reference to `cv::circle(cv::Mat&, cv::Point_<int>, int, cv::Scalar_<double> const&, int, int, int)' 
./obj/local/armeabi/libopencv_imgproc.a(contours.cpp.o): In function `cv::drawContours(cv::_OutputArray const&, cv::_InputArray const&, int, cv::Scalar_<double> const&, int, int, cv::_InputArray const&, int, cv::Point_<int>)': 
contours.cpp:(.text+0x3fd2): undefined reference to `cvDrawContours' 
./obj/local/armeabi/libopencv_imgproc.a(samplers.cpp.o): In function `cvSampleLine': 
samplers.cpp:(.text+0x65a2): undefined reference to `cvInitLineIterator' 
./obj/local/armeabi/libopencv_imgproc.a(templmatch.cpp.o): In function `cv::crossCorr(cv::Mat const&, cv::Mat const&, cv::Mat&, cv::Size_<int>, int, cv::Point_<int>, double, int)': 
templmatch.cpp:(.text+0x47e): undefined reference to `cv::getOptimalDFTSize(int)' 
templmatch.cpp:(.text+0x494): undefined reference to `cv::getOptimalDFTSize(int)' 
templmatch.cpp:(.text+0x92c): undefined reference to `cv::dft(cv::_InputArray const&, cv::_OutputArray const&, int, int)' 
templmatch.cpp:(.text+0xfa4): undefined reference to `cv::dft(cv::_InputArray const&, cv::_OutputArray const&, int, int)' 
templmatch.cpp:(.text+0x1006): undefined reference to `cv::mulSpectrums(cv::_InputArray const&, cv::_InputArray const&, cv::_OutputArray const&, int, bool)' 
templmatch.cpp:(.text+0x102e): undefined reference to `cv::dft(cv::_InputArray const&, cv::_OutputArray const&, int, int)' 
collect2: ld returned 1 exit status 
make: *** [obj/local/armeabi/libarengine.so] Error 1 

sto collegano con 3 moduli: opencv_core opencv_calib3d opencv_imgproc. Cosa mi manca?

Modifica. Ho aggiunto la libreria opencv_flann e ridotto il numero di errori. Ma dove sono definiti cv :: line o ad esempio cv :: rectangle?

Answer 1

Il problema era nell'ordine delle librerie. L'ordine corretto è:

LOCAL_STATIC_LIBRARIES := libopencv_calib3d opencv_features2d opencv_flann opencv_imgproc opencv_core 

Così il principio fondamentale è che bisogna dichiarare le librerie in ordine inverso della loro dipendenza (ad esempio * opencv_imgproc * dipende * opencv_core * e * opencv_features2d * dipende * opencv_imgproc * e così via).

Answer 2

Manca opencv_highgui e probabilmente anche opencv_features2d.

cv::rectangle definito in opencv_core.

Assicurarsi che il file sia collegato a tutte queste librerie.

Answer 3

È anche possibile esaminare l'output di pkg-config --static --libs opencv per disporre le librerie nell'ordine corretto.