cvShowImage错误

好 啊。在SO的帮助下,我成功地组合了这段代码。不过,还有一个错误:

    // ...

    std::vector<char> jpegBuffer(lSize);

    // copy the file into the buffer.
    fread(&jpegBuffer[0], 1, jpegBuffer.size(), pFile);

    // terminate
    fclose (pFile);

    Mat matrixJpeg = cv::imdecode(Mat(jpegBuffer), 1);

    IplImage fIplImageHeader = matrixJpeg;

    cvShowImage("Video", fIplImageHeader);
    char key = cvWaitKey();

不过,这段代码还有一个错误。在这条线上:

cvShowImage("Video", fIplImageHeader);

错误是:

/home/richard/Desktop/richard/client/src/main.cc:106: error: cannot convert ‘IplImage’ to ‘const CvArr*’ for argument ‘2’ to ‘void cvShowImage(const char*, const CvArr*)’

根据文件,Mat和IplImage应该是可交换的,这:

IplImage fIplImageHeader = matrixJpeg;

将Mat转换为IplImage所需的一切。