将Eigen库与OpenCV 2.3.1一起使用 [英] Using Eigen Library with OpenCV 2.3.1

问题描述

我在使用 C ++ 中的 Eigen3 库和 OpenCV 应用程序时遇到麻烦. 我已经使用以下命令在Ubuntu上安装了Eigen3库:

I have trouble in using Eigen3 Library along with OpenCV application in C++. I have installed Eigen3 library on my Ubuntu using the following command:

sudo apt-get install libeigen3-dev

使用以下命令进行编译时，我能够编译并使用 Eigen3示例应用程序(已安装Eigen3库，并且可以正常工作).

I am able to compile and use sample Eigen3 applications (Eigen3 library is installed and it works) when I use the following command to compile.

g++ -I/usr/include/eigen3 Eig.cpp -o Eig

我想将已安装的Eigen库与OpenCV一起使用.

I want to use the installed Eigen library with OpenCV.

我用以下标志编译了OpenCV源代码:

I compiled OpenCV source with following flags:

cmake -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=OFF -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON USE_EIGEN=/usr/include/eigen3 ..

我的OpenCV代码包括以下标头和名称空间:

My OpenCV code includes the following headers and namespace:

#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <assert.h>
#include <opencv2/core/eigen.hpp>

using namespace cv;
using namespace std;
using namespace Eigen;

但是，当我正常编译OpenCV应用程序时，我的编译器给我以下错误:

In file included from Read.cpp:6:
/usr/local/include/opencv2/core/eigen.hpp:54: error: expected ‘,’ or ‘...’ before ‘::’ token
/usr/local/include/opencv2/core/eigen.hpp: In function ‘void cv::eigen2cv(int)’:
/usr/local/include/opencv2/core/eigen.hpp:56: error: ‘src’ was not declared in this scope
/usr/local/include/opencv2/core/eigen.hpp:56: error: ‘Eigen’ is not a class or namespace
/usr/local/include/opencv2/core/eigen.hpp:60: error: ‘dst’ was not declared in this scope
/usr/local/include/opencv2/core/eigen.hpp:66: error: ‘dst’ was not declared in this scope

我该如何解决这个问题?

How do I solve this problem?

推荐答案

我只需要包含

#include <Eigen/Dense>

包括OpenCV标头没错.我通过包含Eigen lib头文件和OpenCV lib头文件来编译它们.

before including OpenCV headers thats all. I compiled them by including the Eigen lib headers and OpenCV lib headers.

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