2015-09-14 404 views
2

我成功地在樹莓派2(raspbian)上運行opencv python代碼。 現在我想嘗試通過使用該命令來編譯樹莓PI 2的OpenCV C++代碼:在樹莓派2上使用opencv C++

g++ -std=c++0x test_colour_tracking_1.cpp -otest_colour 

的C++如下編碼。

#include <iostream> 
#include <opencv2/opencv.hpp> 
#include <opencv2/highgui/highgui.hpp> 
#include <opencv2/imgproc/imgproc.hpp> 
using namespace cv; 
using namespace std; 
int main(int argc, char** argv) 
{ 
    VideoCapture cap(0); //capture the video from web cam 
    if (!cap.isOpened()) // if not success, exit program 
    { 
     cout << "Cannot open the web cam" << endl; 
     return -1; 
    } 
    while (true) 
    { 
     Mat imgOriginal;  
     bool bSuccess = cap.read(imgOriginal); // read a new frame from video 

     if (!bSuccess) //if not success, break loop 
     { 
      cout << "Cannot read a frame from video stream" << endl; 
      break; 
     } 
    imshow("image",imgOriginal); 
    } 
    return 0; 
} 

但它顯示錯誤如下。

/tmp/ccHcCqSm.o: In function `main': 
test_colour_tracking_1.cpp:(.text+0x70): undefined reference to `cv::VideoCapture::VideoCapture(int)' 
test_colour_tracking_1.cpp:(.text+0x7c): undefined reference to `cv::VideoCapture::isOpened() const' 
test_colour_tracking_1.cpp:(.text+0xd8): undefined reference to `cv::VideoCapture::read(cv::Mat&)' 
test_colour_tracking_1.cpp:(.text+0x150): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)' 
test_colour_tracking_1.cpp:(.text+0x164): undefined reference to `cv::imshow(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&)' 
test_colour_tracking_1.cpp:(.text+0x1a4): undefined reference to `cv::VideoCapture::~VideoCapture()' 
test_colour_tracking_1.cpp:(.text+0x1f0): undefined reference to `cv::VideoCapture::~VideoCapture()' 
/tmp/ccHcCqSm.o: In function `cv::Mat::~Mat()': 
test_colour_tracking_1.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x3c): undefined reference to `cv::fastFree(void*)' 
/tmp/ccHcCqSm.o: In function `cv::Mat::release()': 
test_colour_tracking_1.cpp:(.text._ZN2cv3Mat7releaseEv[cv::Mat::release()]+0x58): undefined reference to `cv::Mat::deallocate()' 
collect2: ld returned 1 exit status 

我想問一下如何檢查幀速率每秒?

回答

2

嘗試使用下面的命令:

g++ -std=c++0x test_colour_tracking_1.cpp -o test_colour `pkg-config --cflags --libs opencv` 
+0

我會嘗試後我的銼刀PI有問題,我發表我的問題在http://raspberrypi.stackexchange.com/questions/36380/why-可以採取行動,而不是引導,你可以看看嗎? – SamTew