ubuntu下opencv程序初步

opencv可以用新立得安装
一、eclipse开发
1.新建empty project
2.新建main.cpp

#include <cv.h>
#include <highgui.h>

using namespace cv;

int main(int argc, char* argv[])
{
    Mat image;
    image = imread("./lbb.jpg");

    if (!image.data)
    {
        printf("No image data\n");
        return -1;
    }

    namedWindow("Display Image", CV_WINDOW_AUTOSIZE);
    imshow("Display Image", image);
    waitKey(0);
    return 0;
}

3.工程右键->properties->c/c++ build->settings->gcc c++ compiler->includes添加opecv头文件路径（可用命令查询pkg-config --cflags opencv）
4. gcc c++ linker->libraries添加opencv_core opencv_highgui opencv_imgproc(多行)
5.确认目录下有lbb.jpg，ctrl_b ctrl_f11
二、不借助IDE
1.在/home  下新建work/opencvTest
2.新建test.cpp内容如上
3.编写CMakeLists.txt，内容如下：

project(test)
find_package(OpenCV REQUIRED)
add_executable(test test)
target_link_libraries(test ${OpenCV_LIBS})
cmake_minimum_required(VERSION 2.8)

4. ~/work/opencvTest cmake .
5. ~/work/opencvTest make
6. ~/work/opencvTest ./test