Question

你好！

我在使用imgproc.hpp文件中的cornerSubPix方法时遇到了麻烦。我不明白哪个库丢失或错误是什么。我在OS X 10.10.3上使用Qt 5.4.1，并使用OpenCV 3.0.0 C ++库。

这是我的代码：

    #include <opencv2/opencv.hpp>
    #include <opencv2/core/types.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/imgproc.hpp>
    #include <opencv2/features2d/features2d.hpp>
    #include <vector>
    #include <stdio.h>
    #include "cameraparams.h"
    #include <iostream>

    [...]

    vector< vector <Point2f> > left_2D_points, right_2D_points;

        for( int i=0;i<left_images.size();i++){

            Mat left_image = left_images[i];
            Mat rig

ht_image = right_images[i];
        std::vector<cv::Point2f> left_im_points,right_im_points;

        bool found_left = findChessboardCorners(left_image,Size(width,height),left_im_points,CALIB_CB_ADAPTIVE_THRESH + CALIB_CB_NORMALIZE_IMAGE+ CALIB_CB_FAST_CHECK);
        bool found_right = findChessboardCorners(right_image,Size(width,height),right_im_points,CALIB_CB_ADAPTIVE_THRESH + CALIB_CB_NORMALIZE_IMAGE+ CALIB_CB_FAST_CHECK);

        if( found_left && found_right){
              Size winSize = Size( 7, 7 );
              Size zeroZone = Size( -1, -1 );
              TermCriteria criteria = TermCriteria( TermCriteria::EPS + TermCriteria::MAX_ITER, 40, 0.001 );

              cv::cornerSubPix(left_image,left_im_points,winSize,zeroZone,criteria);

        }

    }

这是我的* .pro文件：

INCLUDEPATH +=  /usr/local/include/ \
                /usr/local/include/pcl-1.7/ \
                /usr/local/include/eigen3/ \
                /usr/local/include/vtk-6.2/

LIBS += -L/usr/local/lib \
        -lopencv_core \
        -lopencv_imgcodecs \
        -lopencv_highgui \
        -lopencv_imgproc \
        -lopencv_objdetect \
        -lopencv_calib3d \
        -lopencv_features2d \
        -lopencv_flann \
        -lopencv_ml \
        -lopencv_photo \
        -lopencv_shape \
        -lopencv_stitching \
        -lopencv_superres \
        -lopencv_ts \
        -lopencv_video \
        -lopencv_videoio \
        -lopencv_videostab

所以我想在我的棋盘上更准确地检测角落。但是当我编译时，我得到了这个错误：

Undefined symbols for architecture x86_64:
  "cv::_InputArray::getMatVector(std::vector<cv::Mat, std::allocator<cv::Mat> >&) const", referenced from:
      vtable for cv::_InputOutputArray in calibrator.o
  "cv::_InputArray::getUMatVector(std::vector<cv::UMat, std::allocator<cv::UMat> >&) const", referenced from:
      vtable for cv::_InputOutputArray in calibrator.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Classification] Error 1

我正在寻找几天后的答案，而且我已经被封锁了。感谢所有人提前做好准备！

Answer 1

上次使用相同配置时遇到了同样的问题（Mac OS 10.10.3，Qt 5.4.1，OpenCV 3.0）。似乎编译器clang与opencv 3.0不兼容。

使用旧版本的opencv（例如2.4.10）可以解决问题。

玩得开心，祝你好运：）

Answer 2

此问题首先发生reported here。它似乎与您的编译器正在使用的C ++标准库的版本有关。在该主题上已经讨论了一些解决方法。

但是，another answer on Stackoverflow似乎解决了这个问题。

Google is your friend.

OpenCV（C ++ / Qt） - cornerSubPix错误

你好！

2 个答案: