OpenCV（C ++ / Qt） - cornerSubPix错误 [英] OpenCV (C++/Qt) - cornerSubPix error

问题描述

您好！

我从imgproc.hpp文件中遇到了cornerSubPix方法的问题。
我不明白哪个库缺少或什么是错误。
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> 
 #includecameraparams.h
 #include< iostream> 
 
 [...] 
 
矢量< 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）; 
 
} 
 
} 
  

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精确地检测角。但是当我编译时，我得到这个错误：

 架构x86_64的未定义符号：
cv :: _ InputArray :: getMatVector（std :: vector< cv :: Mat，std :: allocator< cv :: Mat>>&）const，引用自：
 vtable for cv :: _ InputOutputArray in calibrator.o 
cv :: _ InputArray :: getUMatVector（std :: vector< cv :: UMat，std :: allocator< cv :: UMat>&）const，引用自：
 vtable for cv :: _ InputOutputArray in calibrator.o 
 ld：没有为架构x86_64找到符号
 clang：error：linker命令失败，退出代码为1（使用-v查看调用）
 make ：*** [Classification]错误1 
  

我现在正在寻找答案，我已经被封锁了。

解决方案

这个问题是第一个此处报告。它似乎与您的编译器使用的C ++标准库的版本相关。

， Stackoverflow的另一个答案似乎解决了这个问题。

Google是您的朋友。

Hello !

I'm having troubles with cornerSubPix method from imgproc.hpp file. I don't understand which library is missing or what's the error. I work with Qt 5.4.1 on OS X 10.10.3, and using OpenCV 3.0.0 C++ library.

Here is my code :

    #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);

        }

    }

And here is my *.pro file :

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

So I want to detect corner more precisely on my checkerboard. But when I'm compiling I get this error :

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

I am looking for the answer since several days now, and I'm already blocked. Thank you all in advance for any trail !

解决方案

This issue was first reported here. It appears to be related to the version of the C++ standard library that your compiler is using. A few workarounds have been discussed on that thread.

However, another answer on Stackoverflow seems to fix the problem.

Google is your friend.

这篇关于OpenCV（C ++ / Qt） - cornerSubPix错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！