c++ - “CvLoadImage”未在此范围内声明

Question

我尝试在我的代码中使用 OpenCV C Api。我在 usr/include 下有 opencv 和 opencv2 文件夹。我可以使用 OpenCV C++ Api。 C++代码和编译&链接命令如下:

#include <iostream>
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/core/core.hpp"
#include "opencv2/opencv.hpp"

using namespace cv;

int main()
{

    Mat im = imread("Sobel.jpg");
    return 0;
}

编译:g++ -c main.cpp

链接:g++ -o exe main.opkg-config --libs opencv`

现在我想使用 OpenCV C-Api。我的代码在这里:

#include <iostream>
#include "opencv/cv.h"
#include "opencv/highgui.h"
#include "opencv2/imgproc/imgproc_c.h"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/core/core.hpp"
#include "opencv2/opencv.hpp"

using namespace cv;

int main()
{

    IplImage* pImg = CvLoadImage("Sobel.jpg");
    if(pImg == NULL)
         return -1;

    // ... big bloat to do the same operations with IplImage    

    CvShowImage("Image", pImg);
    cvWaitKey();
    CvReleaseImage(&pImg); // Do not forget to release memory.
    // end code here

    return 0;
}

当我编译g++ -c main.cpp时，编译器说“CvLoadImage”未在此范围内声明

Answer 1

一个简单的拼写错误，函数原型(prototype)是

IplImage* cvLoadImage( const char* filename, int iscolor=CV_LOAD_IMAGE_COLOR );