OpenCV第一次尝试

来源：互联网发布：游戏淘宝网商城编辑：程序博客网时间：2024/05/29 19:26

1. opencv在ubuntu上的配置和测试

http://blog.csdn.net/a1429331875/article/details/31539129

2. OpenCV 3.0 程序编译链接错误

问题描述

error: main.o: undefined reference to symbol ‘_ZN2cv6imreadERKNS_6StringEi’
/usr/local/OpenCV/Release/lib/libopencv_imgcodecs.so.3.0:-1: error: error adding symbols: DSO missing from command line
error: collect2: error: ld returned 1 exit status

解决方案

问题描述里已经表述得很清楚了，需要链接libopencv_imgcodecs.so，这可能是和2.x版本的一处不同。

如果问题描述为：

error: undefined reference to `cv::imread(cv::String const&, int)’

解决方法同上。

3. 编译时需要添加的库

    INCLUDEPATH += /usr/local/include \                    /usr/local/include/opencv \                    /usr/local/include/opencv2    LIBS += /usr/local/lib/libopencv_highgui.so \            /usr/local/lib/libopencv_core.so    \            /usr/local/lib/libopencv_imgproc.so  \            /usr/local/lib/libopencv_imgcodecs.so

4. 测试

#include <iostream>#include <opencv2/core/core.hpp>#include <opencv2/highgui/highgui.hpp>#include <opencv2/imgproc/imgproc.hpp>using namespace cv;using namespace std;int main(){        namedWindow( "src");        Mat img = imread( "/home/ld/Documents/lena.jpg" );        if(!img.data) {            cout<<"file not fount"<<endl;            return 1;        }        else {             imshow( "src", img );             waitKey();             return 0;        }}

0 0