可以使用C ++和C一起开发OpenCV

时间:2012-12-03 15:40:00

标签: opencv

可以一起使用C ++和C开发OpenCV吗?以下是我遇到这个问题的程序。它用C编码并且运行良好。但是如果我使用

cv::Mat saveImage=cv::imread("D:\\opencvStudy\\opencv_test\\TaskDemo\\TaskDemo\\save.jpg");
cv::imshow("save",saveImage);

替换

IplImage* saveImge =cvLoadImage("D:\\opencvStudy\\opencv_test\\TaskDemo\\TaskDemo\\save.jpg");
cvShowImage("saveimage",saveImge);

我遇到了这个:

TaskDemo.exe中0x75709673处的未处理异常:Microsoft C ++异常:cv ::内存位置0x0039ea0c的异常

以下是整个计划。希望有人能帮助我。非常感谢

#include<opencv/cv.h>
#include<opencv/highgui.h>
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/video/tracking.hpp"


#include <iostream>
#include <ctype.h>

CvPoint pt1 = cvPoint(0,0);
CvPoint pt2 = cvPoint(0,0);
bool is_selecting = false;

void cvMouseCallback(int mouseEvent,int x,int y,int flags,void* param)
{
switch(mouseEvent)
{
case CV_EVENT_LBUTTONDOWN:
    pt1 = cvPoint(x,y);
    pt2 = cvPoint(x,y);
    is_selecting = true;
    break;
case CV_EVENT_MOUSEMOVE:
    if(is_selecting)
        pt2 = cvPoint(x,y);
    break;
case CV_EVENT_LBUTTONUP:
    pt2 = cvPoint(x,y);
    is_selecting = false;
    break;
}
return;
 }

int main(int argc,char* argv[])
{
char img_path[80] = "D:\\opencvStudy\\pic\\boldt.jpg";
char save_path[80] = "save.jpg";
char* window = "img";

IplImage* img = cvLoadImage(img_path);  
IplImage* img_show = cvCloneImage(img);

cvNamedWindow(window,CV_WINDOW_AUTOSIZE);
cvSetMouseCallback(window,cvMouseCallback);

char text[80];
CvFont font;
cvInitFont(&font,CV_FONT_HERSHEY_PLAIN,1.0,1.0);
while(true)
{
    cvCopy(img,img_show);
    cvRectangle(img_show,pt1,pt2,cvScalar(255,255,255));
    sprintf(text,"roi = cvRect(%d,%d,%d,%d)",pt1.x,pt1.y,std::abs(pt2.x-pt1.x),std::abs(pt2.y-pt1.y));
    cvPutText(img_show,text,cvPoint(10,20),&font,cvScalar(0,0,255));

    cvShowImage(window,img_show);
    char key = cvWaitKey(10);
    if (key='r')
    {
        cvSetImageROI(img,cvRect(pt1.x,pt1.y,std::abs(pt2.x-pt1.x),std::abs(pt2.y-pt1.y)));
        cvSaveImage(save_path,img);
        cvResetImageROI(img);
        IplImage* saveImge = cvLoadImage("D:\\opencvStudy\\opencv_test\\TaskDemo\\TaskDemo\\save.jpg");

        cvShowImage("saveimage",saveImge);
        //cv::Mat saveImage=cv::imread("D:\\opencvStudy\\opencv_test\\TaskDemo\\TaskDemo\\save.jpg");
        //cv::imshow("save",saveImage);
    }
    else if(key==27)
        break;
}
cvReleaseImage(&img);
cvReleaseImage(&img_show);
return 0;

}

更新

#include "opencv2/highgui/highgui.hpp"
#include "opencv2/core/core.hpp"
#include <iostream>
#include <ctype.h>

using namespace std;
using namespace cv;
cv::Point pt1=Point(0,0);
cv::Point pt2=Point(0,0);
bool is_selecting=false;

static void onMouse(int mouseEvent,int x,int y,int flags,void* param)
{
switch(mouseEvent)
{
case CV_EVENT_LBUTTONDOWN://CV_EVENT_LBUTTONDOWN
    pt1 = Point(x,y);
    pt2 = Point(x,y);
    is_selecting = true;
    break;
case CV_EVENT_MOUSEMOVE:
    if(is_selecting)
        pt2 = Point(x,y);
    break;
case CV_EVENT_LBUTTONUP:
    pt2 = Point(x,y);
    is_selecting = false;
    break;
}
}

int main()
{
cv::Mat img=cv::imread("D:\\opencvStudy\\pic\\boldt.jpg");
cv::Mat img_show=img.clone();

cv::namedWindow("Task2",0);
cv::setMouseCallback("Task2",onMouse,0);

char text[80];
while(true)
{
    img.copyTo(img_show);
    cv::rectangle(img_show,pt1,pt2,cv::Scalar(255,255,255));
    sprintf(text,"roi = cvRect(%d,%d,%d,%d)",pt1.x,pt1.y,std::abs(pt2.x-pt1.x),std::abs(pt2.y-pt1.y));
    cv::putText(img_show,text,cvPoint(10,20),10,10,Scalar(0,0,255));
    cv::imshow("Task2",img_show);
    char key=cv::waitKey(10);
    if (key='r')
    {
        cv::Mat save=img(cv::Rect(pt1.x,pt1.y,std::abs(pt2.x-pt1.x),std::abs(pt2.y-pt1.y)));
        cv::imwrite("save.jpg",save);
        cv::Mat saveImage=cv::imread("D:\\opencvStudy\\opencv_test\\TaskDemo\\TaskDemo\\save.jpg");
        cv::imshow("save",saveImage);
    }
    else if(key==27)
        break;
}
return 0;

}

1 个答案:

答案 0 :(得分:2)

问题在于标题冲突。你不应该同时包括旧的和新的:

#include<opencv/cv.h>
#include<opencv/highgui.h>
#include "opencv2/highgui/highgui.hpp"

相反,仅包含新标题,如下所示:

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

原因是C ++标头还包含C接口。

更新:

当然如果你使用cv :: Mat,那么你也需要使用新函数。

CvCopy变为cv :: copy,不需要cvReleaseImage,cvRectangle变为cv :: rectangle,cvSetImageROI变为img(rect),cvPoint变为cv :: Point cvRect变为cv :: Rect cvCloneImage变成了img.clone()等等......

或者您需要从cv :: Mat到IplImage的一些转换才能使用旧函数。关于来回转换的SO有一些问题。

UPDATE2:

最好删除所有cv::,因为您使用的是using namespace cv

然后检查旧cv前缀留下的函数和变量,并删除这些前缀。 (我还找到了一个:cvPoint)。

等一下,你正在使用char text[80]

我认为这又是问题的根源。最好将其切换到

#include <sstream>
//...
stringstream ss;
ss << "Rect(" << pt1.x << ", " << ... << ")";
//...
putText(img_show, ss.str(), Point(10,20), FONT_HERSHEY_PLAIN, 1, Scalar(0, 0, 255) );

请注意,我使用的字体不是10,而是 FONT_HERSHEY_PLAIN (或其他一些FONT_常量)。