opencv条码(2)图像读入和显示

查看了opencv中文的网站的简单历程，好多代码是opencv1.0版本，或者C语言的，感觉写的不好理解。。

我觉得实现简单的功能的话可以先不考虑那么多 代码能少就少才好  所以这里贴出我的代码 

环境：win7（64位）+opencv2.4.3+Qt5.0.1(mingw47_32)

qt的.pro文件中添加：

INCLUDEPATH+=C:/software/opencv/buildForMinGW/install/include\

C:/software/opencv/buildForMinGW/install/include/opencv\

C:/software/opencv/buildForMinGW/install/include/opencv2

LIBS+=C:/software/opencv/buildForMinGW/install/lib/libopencv_calib3d243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_contrib243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_core243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_features2d243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_flann243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_gpu243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_highgui243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_imgproc243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_legacy243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_ml243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_nonfree243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_objdetect243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_photo243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_stitching243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_ts243.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_video243.dll.a\

C:/software/opencv/buildForMinGW/install/lib/libopencv_videostab243.dll.a



今天先贴第一个代码吧:

/*
 *environment:opencv2.4.3+Qt5.0.1(mingw47)
 *author:ChrisZZ
 *功能：读取指定路径下的图片
 *     并且在namedWindow中显示
 */
#include <cv.h>
#include <highgui.h>

using namespace cv; //下面的所有cv相关类型不用加上前缀了

int main(){
    Mat img = imread("C:/testdir/barcode.bmp"); //声明Mat变量并导入图片

    if(!img.data) //判断图片调入是否成功
         return -1; //调入图片失败则退出
    //创建窗口,并确定其为大小不可变类型窗口
    namedWindow("myImgWindow", CV_WINDOW_AUTOSIZE);

    //显示图片。如果你不介意窗口大小可变，可以直接注释掉上一句。因为imshow可以直接创建窗口
    imshow("loveLena", img);

    waitKey(); //等待按键

    return 0;
}

本人在做条码所以这里图片都叫做barcode.bmp