我正在尝试让 opencv2 代码在我的 Ubuntu 12.04 上运行。似乎库已正确安装。
这是我试图开始工作的示例代码
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;
int main(int argc, char ** argv)
{
// Read image and write to matrix - here converted to grayimage by "0"
Mat myimage = imread ( argv[1], 0 );
// Show it in a window
imshow ( "MyWindowTitle", myimage);
// Wait for a keypress ( for x [ms], 0 means infinity )
waitKey(0);
}
我将此代码编译为：
g++ -o sample `pkg-config --cflags --libs opencv` sample.cpp
但是我收到以下编译器错误：
/tmp/cccMPtyu.o: In function `main':
imshow.cpp:(.text+0x59): undefined reference to `cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
imshow.cpp:(.text+0x92): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
imshow.cpp:(.text+0xc9): undefined reference to `cv::imshow(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)'
imshow.cpp:(.text+0xeb): undefined reference to `cv::waitKey(int)'
/tmp/cccMPtyu.o: In function `cv::Mat::~Mat()':
imshow.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x2b): undefined reference to `cv::fastFree(void*)'
/tmp/cccMPtyu.o: In function `cv::Mat::release()':
imshow.cpp:(.text._ZN2cv3Mat7releaseEv[cv::Mat::release()]+0x3b): undefined reference to `cv::Mat::deallocate()'
collect2: ld returned 1 exit status
可能的原因是什么？我该如何纠正？
也有人可以建议一个专门针对opencv2的好教程。我以前使用过 opencv1 进行编程，但似乎发生了很多变化。